{"title":"Builder — Filter media","description":null,"products":[{"product_id":"marinepure-fresh-gems-50g","title":"MarinePure Fresh GEMS 50g","description":"\u003cp\u003e\u003cstrong\u003eUltra-porous ceramic biomedia sized for nano and small canister filters.\u003c\/strong\u003e MarinePure Fresh GEMS are small ceramic pellets made by CerMedia (USA) from the same aluminosilicate ceramic as the full-size MarinePure Spheres and Plates, fired above 1,000°C to create a rigid, open-pore structure. Each pellet is about 19 mm (¾\") across, so the 50 g box suits hang-on-back and small canister filters on freshwater community, planted and tropical tanks, where a full block or sphere box would be overkill.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-porous ceramic\u003c\/strong\u003e — an open-pore structure gives bacteria far more surface to colonise than a plastic bio-ball or ring of the same size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandles the nitrogen cycle\u003c\/strong\u003e — the porosity is designed to support ammonia- and nitrite-processing bacteria, with nitrate reduction in the low-oxygen pore centres over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResists clogging\u003c\/strong\u003e — the ceramic structure holds its shape, so flow through the media stays consistent between cleans, unlike foam or floss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — rinse in tank water at a water change rather than replacing on a schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFills odd-shaped spaces\u003c\/strong\u003e — loose pellets pack into media baskets and hang-on-back trays that a block or plate can't reach.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMarinePure (CerMedia, USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e50 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePellet size\u003c\/th\u003e\n\u003ctd\u003eApprox. 19 mm (¾\") diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eInert aluminosilicate ceramic, fired above 1,000°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpen porosity\u003c\/th\u003e\n\u003ctd\u003e80–90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface area density\u003c\/th\u003e\n\u003ctd\u003eApprox. 1.3–1.7 m² per gram (CerMedia's published material rate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal surface area, this box\u003c\/th\u003e\n\u003ctd\u003eApprox. 65–85 m² (700–915 sq ft), calculated from the rate above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter compatibility\u003c\/th\u003e\n\u003ctd\u003eCanister, hang-on-back and internal filters with a media basket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich GEMS box do I need?\u003c\/h3\u003e\u003cp\u003eGEMS come in two sizes, and the right one depends on the filter as much as the tank.\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eSurface area\u003c\/th\u003e\n\u003cth\u003eCerMedia bioload guidance\u003c\/th\u003e\n\u003cth\u003eBest suited to\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFresh GEMS 50 g\u003c\/td\u003e\n\u003ctd\u003eApprox. 65–85 m² (700–915 sq ft)\u003c\/td\u003e\n\u003ctd\u003eTanks up to 40 US gal (150 L) — CerMedia's own filter-sizing guidance for this pack\u003c\/td\u003e\n\u003ctd\u003eFreshwater community, planted and tropical tanks in small canisters or hang-on-back filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGEMS 90 g\u003c\/td\u003e\n\u003ctd\u003eOver 135 m² (1,450 sq ft)\u003c\/td\u003e\n\u003ctd\u003eUp to 70 US gallons (265 L)\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine nano and small tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eCerMedia rates the two GEMS packs separately rather than one being scaled from the other: tanks up to 40 US gallons (150 L) for the Fresh GEMS 50 g pack, and up to 70 US gallons (265 L) for the 90 g box. Both figures come from CerMedia's own site.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater community, planted and tropical aquariums running a canister, hang-on-back or internal filter with a media basket small enough for loose pellets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the sole biological media on anything beyond a small tank — for larger systems, MarinePure Spheres, PODs or a Plate carry far more surface area per dollar. Not a mechanical or chemical media either — it won't polish water or remove odours on its own.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse GEMS in tank water or dechlorinated water at a water change — never under tap water straight from the mains, since chlorine and chloramine will knock back the bacterial colony. There's no fixed replacement interval; the ceramic doesn't wear out, so GEMS keep working until the filter basket is due for a clean.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarinePure Mesh Bag (Small)\u003c\/strong\u003e — keeps loose GEMS contained and easy to lift out for a rinse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA water conditioner\u003c\/strong\u003e — dechlorinate top-up water before it reaches the filter, so new water doesn't strip the bacterial film.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn ammonia and nitrite test kit\u003c\/strong\u003e — confirm the media is cycled before stocking up.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eMarinePure Fresh GEMS has no stated wear-out life from CerMedia — it's ceramic, not a consumable cartridge — and any manufacturing fault is covered by your rights under Australian Consumer Law in addition to any retailer or manufacturer terms. Standard parcel freight applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I mix GEMS with other filter media in the same basket?\u003c\/h4\u003e\u003cp\u003eYes. GEMS are commonly run alongside mechanical floss or sponge for particles, and chemical media such as carbon for odour and colour, as long as the basket still lets water pass through the GEMS rather than around them.\u003c\/p\u003e\u003ch4\u003eDo I need to cycle a filter before adding fish?\u003c\/h4\u003e\u003cp\u003eYes — GEMS need time for bacteria to colonise the ceramic before they're doing useful biological work. Run the filter on an established tank's water, or fishless-cycle with an ammonia source, before adding livestock.\u003c\/p\u003e\u003ch4\u003eWill GEMS work in a marine tank?\u003c\/h4\u003e\u003cp\u003eThe ceramic itself is fresh and marine safe, but CerMedia markets the Fresh GEMS 50 g pack specifically for freshwater use. For marine or reef systems, the 90 g GEMS box is the one CerMedia rates for marine as well as freshwater.\u003c\/p\u003e\u003ch4\u003eHow long does a box of GEMS last?\u003c\/h4\u003e\u003cp\u003eIndefinitely, with a periodic rinse. Ceramic biomedia isn't a wear item like filter floss — replace it only if it's physically damaged.\u003c\/p\u003e","brand":"MarinePure","offers":[{"title":"Default Title","offer_id":54773850308899,"sku":"725342","price":23.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/gem-box-only-3787-scaled.jpg?v=1782102139"},{"product_id":"seachem-the-bag-13-x-25cm","title":"Seachem The Bag (13 x 25cm)","description":"\u003cp\u003e\u003cstrong\u003eThe filter bag that won't leak your Purigen.\u003c\/strong\u003e Seachem's The Bag is a welded-seam media bag with a superfine 180-micron polyethylene mesh — fine enough to hold the smallest filtration resins securely, with none of the loose stitching that lets media escape from cheaper bags.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperfine 180-micron mesh\u003c\/strong\u003e holds even the finest resins — Purigen, CupriSorb and similar — without leaking into the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelded seams\u003c\/strong\u003e — no stitching to degrade, and fully resistant to bleach, caustics and acids, so it survives media regeneration cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResealable locking closure\u003c\/strong\u003e — a plastic zip-tie style seal, no strings to knot or come loose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13 x 25.5 cm\u003c\/strong\u003e, securely holding about 500 mL of media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with the entire Seachem filtration media range\u003c\/strong\u003e, and with most other bagged media.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMesh size\u003c\/th\u003e\n\u003ctd\u003e180 micron (superfine)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePolyethylene, welded seams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e13 x 25.5 cm (5\" x 9.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003eApproximately 500 mL of media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClosure\u003c\/th\u003e\n\u003ctd\u003eResealable locking closure (zip-tie style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChemical resistance\u003c\/th\u003e\n\u003ctd\u003eBleach, caustics and acids — safe through media regeneration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e724916-3100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e000116310000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eHow to use\u003c\/h3\u003e\u003cp\u003eFill loosely with your chosen media, seal the closure, and position the bag where water flow through it is maximised. Don't overpack — media needs room for water to flow around it, and excessive force can stress any seam. Rinse the bag under tap water before first use to clear manufacturing dust.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for fine-grain resins and powders in any canister, sump or hang-on filter — Purigen, CupriSorb, and similarly fine media. Not needed for coarser media like ceramic rings or bio-balls, which are usually loose-filled or held in a coarser bag; the fine mesh restricts flow more than a wider-mesh bag would.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eThe welded seams and chemical resistance mean the bag itself can be reused indefinitely across multiple media changes — replace only the media inside it, not the bag, unless the mesh is visibly torn.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003eSeachem Purigen, MatrixCarbon or CupriSorb, and the Zip Bag range for coarser media that doesn't need a 180-micron mesh.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Seachem's standard quality guarantee in addition to your rights under Australian Consumer Law. Standard freight.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this stop Purigen beads escaping into my tank?\u003c\/h4\u003e\u003cp\u003eYes — the 180-micron mesh is fine enough to contain Purigen and similarly small resins, which is what it's designed for.\u003c\/p\u003e\u003ch4\u003eCan I reuse the bag after washing out old media?\u003c\/h4\u003e\u003cp\u003eYes. The welded seams resist bleach, caustics and acids, so the bag can go through a full media regeneration cycle and be reused.\u003c\/p\u003e\u003ch4\u003eWill it fit in my canister filter's media basket?\u003c\/h4\u003e\u003cp\u003eAt 13 x 25.5 cm it fits inside most canister and hang-on media baskets, but check your filter's basket dimensions before ordering if space is tight.\u003c\/p\u003e\u003ch4\u003eDoes tighter mesh reduce water flow?\u003c\/h4\u003e\u003cp\u003eSome, compared with a coarse bag — pack it loosely and position it in the highest-flow part of the media chamber to minimise the effect.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":54773860794659,"sku":"724916-3100","price":35.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/3100-the-bag-scaled.png?v=1782710396"},{"product_id":"seachem-zip-bag","title":"Seachem Zip Bag","description":"\u003cp\u003e\u003cstrong\u003eA zippered media bag with no strings, no ties, no spills.\u003c\/strong\u003e The Seachem Zip Bag range holds loose filter media behind a corrosion-proof zipper instead of a string tie — quick to open for media changes, secure while the filter's running. Three mesh sizes cover everything from fine chemical media to bulk Matrix.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-proof zipper\u003c\/strong\u003e — opens in seconds for a media change, no strings or ties to knot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable stitched PVC construction\u003c\/strong\u003e across all three sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree mesh grades\u003c\/strong\u003e — fine (25 mesh), medium (16 mesh) and coarse (8 mesh) — matched to media particle size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo strings or ties\u003c\/strong\u003e to work loose in the filter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eMesh\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall\u003c\/td\u003e\n\u003ctd\u003e25 mesh (fine)\u003c\/td\u003e\n\u003ctd\u003e32 x 14 cm (12.5\" x 5.5\")\u003c\/td\u003e\n\u003ctd\u003e~1 L\u003c\/td\u003e\n\u003ctd\u003ePhosGuard, PhosBond, MatrixCarbon, SeaGel, Renew, Zeolite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003e16 mesh\u003c\/td\u003e\n\u003ctd\u003e32 x 14 cm (12.5\" x 5.5\")\u003c\/td\u003e\n\u003ctd\u003e~1 L\u003c\/td\u003e\n\u003ctd\u003eIntermediate to larger-grain media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e8 mesh (coarse)\u003c\/td\u003e\n\u003ctd\u003e48 x 43 cm (19\" x 17\")\u003c\/td\u003e\n\u003ctd\u003e~18 L\u003c\/td\u003e\n\u003ctd\u003eBulk Matrix and Pond Matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eSmall and Medium share the same footprint and differ only in mesh tightness — pick Small for fine powders and small-granule resins, Medium for coarser granular media. Large is a different bag entirely, sized for bulk bio-media in sumps and large canister filters.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, stitched seams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClosure\u003c\/th\u003e\n\u003ctd\u003eCorrosion-proof zipper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitability\u003c\/th\u003e\n\u003ctd\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eHow to use\u003c\/h3\u003e\u003cp\u003eFill with your chosen media, zip closed, and position in the filter so water flow through the bag is maximised. Rinse under tap water before first use. Not recommended for the finest powdered resins — the 25-mesh Small bag is coarser than Seachem's welded 180-micron \"The Bag,\" so for the smallest resins like Purigen, The Bag is the better fit.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for granular chemical and biological media — PhosGuard, PhosBond, MatrixCarbon, SeaGel, Renew, Zeolite, Matrix and Pond Matrix. Not suitable for the finest resin powders, which need the 180-micron mesh of Seachem's The Bag instead.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eThe zipper and stitched PVC construction are reusable across many media changes; rinse the bag out when you replace the media inside it.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003eSeachem MatrixCarbon, PhosGuard or Matrix bio-media, and Seachem's The Bag for anyone also running a fine-grain resin like Purigen.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Seachem's standard quality guarantee in addition to your rights under Australian Consumer Law. Standard freight; the Large size ships in a bigger box due to its size.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWhat's the difference between Small and Medium?\u003c\/h4\u003e\u003cp\u003eSame 32 x 14 cm footprint, different mesh: Small is 25 mesh for fine media, Medium is 16 mesh for coarser granules. Match the mesh to your media's particle size.\u003c\/p\u003e\u003ch4\u003eWill the Large bag fit a hang-on filter?\u003c\/h4\u003e\u003cp\u003eUnlikely — at 48 x 43 cm it's sized for sump baskets and large canister media chambers, not compact hang-on filters.\u003c\/p\u003e\u003ch4\u003eCan I use this for Purigen?\u003c\/h4\u003e\u003cp\u003eNot ideally. Purigen's fine granules are better contained by the 180-micron mesh of Seachem's The Bag; the Zip Bag range is coarser.\u003c\/p\u003e\u003ch4\u003eIs the zipper safe long-term in saltwater?\u003c\/h4\u003e\u003cp\u003eYes, it's built to be corrosion-proof for ongoing use in both freshwater and saltwater systems.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Small (12.5\" x 5.5\")","offer_id":54773861056803,"sku":"724917-1522","price":10.95,"currency_code":"AUD","in_stock":false},{"title":"Medium (12.5\" x 5.5\")","offer_id":55335432585507,"sku":"724918-1521","price":10.95,"currency_code":"AUD","in_stock":false},{"title":"Large (19\" x 17\")","offer_id":55335432618275,"sku":"724919-1505","price":22.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/1522-zip-bag-small.png?v=1782710397"},{"product_id":"seachem-matrix-100l-drum","title":"Seachem Matrix 100L Drum","description":"\u003cp\u003e\u003cstrong\u003eSerious biofiltration at fish-room scale.\u003c\/strong\u003e This 100-litre drum of Seachem Matrix is the bulk format of one of the world's most proven biological media — sized for retailers, breeders, aquaculture setups, pond builders and monster multi-tank systems. At the standard rate of 250 mL per 200 L of water, this drum supports roughly \u003cstrong\u003e80,000 litres\u003c\/strong\u003e of aquarium.\u003c\/p\u003e\u003ch3\u003eWhy Matrix outperforms plastic media\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHighly porous 10 mm inorganic stone with over ~700 m² of surface area per litre — one litre of Matrix equals the surface area of about 170 L of plastic bio-balls\u003c\/li\u003e\n\u003cli\u003eProvides both external \u003cem\u003eand\u003c\/em\u003e internal macroporous surface, with pores ideally sized for bacteria\u003c\/li\u003e\n\u003cli\u003eSupports aerobic \u003cem\u003eand\u003c\/em\u003e anaerobic species — so it removes nitrate along with ammonia and nitrite, simultaneously, in the same filter\u003c\/li\u003e\n\u003cli\u003eCompletely inert: won't break down, won't affect pH, and never needs replacing\u003c\/li\u003e\n\u003cli\u003eRinseable — most bacteria live inside the stone, so cleaning off detritus doesn't crash the colony\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUsing it\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDose 250 mL per 200 L (50 US gal) of water\u003c\/li\u003e\n\u003cli\u003eCompatible with all wet and wet\/dry filters; most effective in canister filters and sumps\u003c\/li\u003e\n\u003cli\u003eLarge enough that no media bag is needed in most applications\u003c\/li\u003e\n\u003cli\u003ePlace after mechanical and chemical media in the flow path\u003c\/li\u003e\n\u003cli\u003eSeed with Seachem Stability to establish the biofilter faster; anaerobic nitrate removal typically develops over a couple of weeks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e natural colour and size variation between pieces is normal. If nitrates hold steady rather than falling, that means production and removal are balanced — add more Matrix to tip the balance.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":54773862924579,"sku":"725056-112","price":1753.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0112-matrix-100_l_b2017ad3-3e94-4077-8f98-97605dd86190.jpg?v=1782710092"},{"product_id":"marinepure-gems-90g","title":"MarinePure GEMS 90g","description":"\u003cp\u003e\u003cstrong\u003eThe GEMS box CerMedia actually rates a bioload figure for.\u003c\/strong\u003e MarinePure GEMS 90 g are small ceramic pellets made by CerMedia (USA) from the same aluminosilicate ceramic as the full-size MarinePure Spheres and Plates, fired above 1,000°C to create a rigid, open-pore structure. Each pellet is about 19 mm (¾\") across. Unlike the 50 g Fresh GEMS pack, this 90 g box is rated by CerMedia for both freshwater and marine nano and small tanks, and comes with a published bioload figure to size a filter against.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-rated bioload\u003c\/strong\u003e — CerMedia states this box supports tanks up to roughly 70 US gallons (265 L), the only GEMS pack size with a published figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver 135 m² (1,450 sq ft) of surface area\u003c\/strong\u003e — packed into a 90 g box, using the same ultra-porous ceramic as the full-size Spheres.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and marine safe\u003c\/strong\u003e — unlike the 50 g Fresh GEMS pack, this size is rated for reef and marine nano tanks as well as freshwater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResists clogging\u003c\/strong\u003e — the ceramic structure holds its shape, so flow through the media stays consistent between cleans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — rinse in tank water at a water change rather than replacing on a schedule.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMarinePure (CerMedia, USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e90 g (3.2 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePellet size\u003c\/th\u003e\n\u003ctd\u003eApprox. 19 mm (¾\") diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eInert aluminosilicate ceramic, fired above 1,000°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpen porosity\u003c\/th\u003e\n\u003ctd\u003e80–90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal surface area\u003c\/th\u003e\n\u003ctd\u003eOver 135 m² (1,450 sq ft) per box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated bioload\u003c\/th\u003e\n\u003ctd\u003eUp to 70 US gallons (265 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter compatibility\u003c\/th\u003e\n\u003ctd\u003eCanister, hang-on-back and internal filters with a media basket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich GEMS box do I need?\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eSurface area\u003c\/th\u003e\n\u003cth\u003eCerMedia bioload guidance\u003c\/th\u003e\n\u003cth\u003eBest suited to\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFresh GEMS 50 g\u003c\/td\u003e\n\u003ctd\u003eApprox. 65–85 m² (700–915 sq ft)\u003c\/td\u003e\n\u003ctd\u003eNot published by CerMedia for this pack size\u003c\/td\u003e\n\u003ctd\u003eFreshwater community, planted and tropical tanks in small canisters or hang-on-back filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGEMS 90 g\u003c\/td\u003e\n\u003ctd\u003eOver 135 m² (1,450 sq ft)\u003c\/td\u003e\n\u003ctd\u003eUp to 70 US gallons (265 L)\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine nano and small tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eIf you're stocking a marine nano or reef tank, or you simply want a bioload figure printed on the box rather than working it out yourself, the 90 g pack is the one CerMedia backs with a number.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater and marine nano and small tanks up to around 70 US gallons (265 L), run through a canister, hang-on-back or internal filter with a media basket that takes loose pellets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e larger systems as the sole biological media — past roughly 70 gallons, MarinePure Spheres, PODs or a Plate carry more surface area per dollar and per litre of basket space. Not a mechanical or chemical media — it won't polish water or remove odours on its own.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse GEMS in tank water or dechlorinated water at a water change — never under tap water straight from the mains, since chlorine and chloramine will knock back the bacterial colony. There's no fixed replacement interval; the ceramic doesn't wear out, so GEMS keep working until the filter basket is due for a clean.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarinePure Mesh Bag (Small)\u003c\/strong\u003e — keeps loose GEMS contained and easy to lift out for a rinse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA marine or reef salt mix\u003c\/strong\u003e — if this box is going into a new marine nano setup rather than an existing tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn ammonia and nitrite test kit\u003c\/strong\u003e — confirm the media is cycled before stocking up.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eMarinePure GEMS 90 g has no stated wear-out life from CerMedia — it's ceramic, not a consumable cartridge — and any manufacturing fault is covered by your rights under Australian Consumer Law in addition to any retailer or manufacturer terms. Standard parcel freight applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWhat's the difference between the 50 g and 90 g GEMS boxes?\u003c\/h4\u003e\u003cp\u003eBoth use the same ceramic pellets. The 90 g box has more surface area, carries a published bioload rating of up to 70 US gallons (265 L), and is the one CerMedia rates for marine and reef tanks as well as freshwater. The 50 g Fresh GEMS box is freshwater-only and doesn't come with a stated bioload figure.\u003c\/p\u003e\u003ch4\u003eCan I run GEMS in a reef tank?\u003c\/h4\u003e\u003cp\u003eYes — this 90 g pack is fresh and marine safe and suits nano reef setups where a full MarinePure Sphere box would be more media than the sump or filter can hold.\u003c\/p\u003e\u003ch4\u003eDo I need to cycle a filter before adding livestock?\u003c\/h4\u003e\u003cp\u003eYes. GEMS need time for bacteria to colonise the ceramic before they're doing useful biological work. Run the filter on established tank water, or fishless-cycle with an ammonia source, before stocking up.\u003c\/p\u003e\u003ch4\u003eHow long does a box of GEMS last?\u003c\/h4\u003e\u003cp\u003eIndefinitely, with a periodic rinse. Ceramic biomedia isn't a wear item like filter floss — replace it only if it's physically damaged.\u003c\/p\u003e","brand":"MarinePure","offers":[{"title":"Default Title","offer_id":54773874065699,"sku":"102665","price":42.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/102665.jpg?v=1782705657"},{"product_id":"marinepure-block-8x8x4","title":"MarinePure Block 8x8x4\"","description":"\u003cp\u003e\u003cstrong\u003eThe nitrate-busting brick.\u003c\/strong\u003e The MarinePure Block is a 20 × 20 × 10 cm (8\" × 8\" × 4\") slab of ultra-porous aluminosilicate ceramic biomedia made by CerMedia (USA). Its deep interior is specifically designed to develop the anaerobic zones where denitrifying bacteria live — so it removes ammonia, nitrite \u003cem\u003eand\u003c\/em\u003e nitrate, something ordinary bio-media can't manage. CerMedia rates it at up to 500 US gallons (around 1,900 L) for general ammonia and nitrite removal, dropping to 150 US gallons (around 570 L) where denitrification is the goal.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves ammonia, nitrite and nitrate\u003c\/strong\u003e — the deep anaerobic core actively reduces nitrate in passive or low-flow placement, not just ammonia and nitrite like ordinary bio-media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreater than 80% open porosity\u003c\/strong\u003e — water can be poured straight through it; CerMedia describes the internal surface area as roughly 1,000 times that of standard plastic bio-media, though it doesn't publish an absolute square-footage figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThin Bio-Film Technology\u003c\/strong\u003e — CerMedia's open, interconnected pore structure keeps bacterial films thin, which resists clogging compared with denser media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks as a live rock substitute\u003c\/strong\u003e in minimalist reef scapes, or as sump media in any freshwater or saltwater system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasily shaped\u003c\/strong\u003e with a hand saw or coarse sandpaper if you need to fit an odd-shaped sump (wear a dust mask, rinse before use).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInert\u003c\/strong\u003e — won't break down or alter water chemistry over time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminosilicate ceramic, fired above 1,000°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e20 × 20 × 10 cm (8\" × 8\" × 4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePorosity\u003c\/th\u003e\n\u003ctd\u003eGreater than 80% open, interconnected porosity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBioload — ammonia and nitrite removal\u003c\/th\u003e\n\u003ctd\u003eUp to 500 US gallons (approx. 1,900 L) per block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBioload — denitrification (nitrate reduction)\u003c\/th\u003e\n\u003ctd\u003eUp to 150 US gallons (approx. 570 L) per block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eCerMedia (USA), sold under the MarinePure brand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRinse before use to remove shipping dust — a tap-water rinse followed by a tank-water rinse is enough.\u003c\/li\u003e\n\u003cli\u003eFor denitrification, place it somewhere passive: in the sump, under a gravel bed, or built into the reef structure. Flow through the block should be gentle, not forced.\u003c\/li\u003e\n\u003cli\u003eRun mechanical filtration upstream so the block isn't doing double duty as a debris trap, and give it a rinse in tank water every few months if flow through it slows down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e sumps and filter compartments in freshwater and marine systems wanting ammonia, nitrite and nitrate reduction from one piece of media, and reef scapes using it as a live rock substitute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e high-flow placements where you specifically want denitrification — the anaerobic core needs passive, low-flow conditions to work.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSold with CerMedia's standard warranty against manufacturing defects, in addition to the consumer guarantees you're entitled to under Australian Consumer Law. Ships from Nick's Aquarium Oceanarium Terrarium in Brisbane \/ North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow many blocks do I need?\u003c\/h4\u003e\u003cp\u003eSize to your tank's total volume against the denitrification rating of 150 US gallons (570 L) per block if nitrate control is your goal, or the higher 500 US gallon (1,900 L) rating if you only need ammonia and nitrite capacity.\u003c\/p\u003e\u003ch4\u003eDoes it work in freshwater?\u003c\/h4\u003e\u003cp\u003eYes — CerMedia rates the MarinePure Block for both freshwater and marine systems.\u003c\/p\u003e\u003ch4\u003eCan I cut it to fit my sump?\u003c\/h4\u003e\u003cp\u003eYes. It can be shaped with a hand saw or coarse sandpaper. Wear a dust mask while cutting and rinse the block before it goes in the tank.\u003c\/p\u003e\u003ch4\u003eWill it work in high flow?\u003c\/h4\u003e\u003cp\u003eIt will still process ammonia and nitrite, but the anaerobic core that drives nitrate reduction needs passive, low-flow conditions — don't expect denitrification from a block sitting in fast-moving return flow.\u003c\/p\u003e","brand":"MarinePure","offers":[{"title":"Default Title","offer_id":54773874098467,"sku":"100895","price":169.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/100895_1fdc64a5-f080-4f9e-b562-e479518e4187.jpg?v=1782705652"},{"product_id":"marinepure-plate-8x8x1","title":"MarinePure Plate 8x8x1\"","description":"\u003cp\u003e\u003cstrong\u003eA slim, cuttable sheet of ceramic biomedia for tight spaces.\u003c\/strong\u003e The MarinePure Plate is a 20 × 20 × 2.5 cm (8\" × 8\" × 1\") sheet of ultra-porous ceramic biomedia made by CerMedia (USA), from the same inert aluminosilicate ceramic as MarinePure Spheres and PODs. Where a bag of loose Spheres needs a basket to sit in, the Plate is rigid enough to stand on its own or be cut down with a hacksaw to fit an odd-shaped sump baffle or filter compartment.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAround 534 m² (5,750 sq ft) of surface area\u003c\/strong\u003e — packed into a single 20 × 20 × 2.5 cm plate, using CerMedia's ultra-porous ceramic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuttable\u003c\/strong\u003e — the ceramic can be cut down with a hacksaw or angle grinder to fit a sump baffle, overflow compartment or an odd-shaped filter box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResists clogging\u003c\/strong\u003e — the rigid open-pore structure doesn't compact the way loose media can, so flow through it stays consistent between cleans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — rinse in tank water at a water change rather than replacing on a schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo bag required\u003c\/strong\u003e — rigid enough to sit directly in a sump compartment or media rack without a mesh bag.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMarinePure (CerMedia, USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e20 × 20 × 2.5 cm (8\" × 8\" × 1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eInert aluminosilicate ceramic, fired above 1,000°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpen porosity\u003c\/th\u003e\n\u003ctd\u003eGreater than 80%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface area\u003c\/th\u003e\n\u003ctd\u003eAround 534 m² (5,750 sq ft) per plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial surface area rate\u003c\/th\u003e\n\u003ctd\u003eApprox. 510 m² per litre (150,000 sq ft per cubic foot) of ceramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCuttable\u003c\/th\u003e\n\u003ctd\u003eYes — hacksaw or angle grinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhat bioload does it support?\u003c\/h3\u003e\u003cp\u003eCerMedia's own dosing guidance for the MarinePure range is 1 gallon of Spheres, or one full 8×8×4\" Block, per 500 US gallons of aquarium water in active flow for ammonia and nitrite control (roughly 100 US gallons in passive flow, for nitrate reduction). The Plate is a quarter the volume of the Block, and retailer spec sheets that reproduce CerMedia's figures put a single Plate at standalone filtration for tanks up to around 100 US gallons (380 L) — useful as a rough guide, though we'd treat CerMedia's own Block and Sphere dosing rate above as the more authoritative number if you're sizing precisely.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e sump compartments, media racks, and canister or filter boxes with room for a rigid slab of media — freshwater or marine, including reef systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e tight hang-on-back baskets sized for loose pellets — use MarinePure GEMS or PODs there instead. Not a mechanical or chemical media — it won't polish water or remove odours on its own.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse the Plate in tank water or dechlorinated water at a water change — never under tap water straight from the mains, since chlorine and chloramine will knock back the bacterial colony. There's no fixed replacement interval; the ceramic doesn't wear out, so a Plate keeps working until it's due for a clean.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA sump baffle or media rack\u003c\/strong\u003e — the Plate is rigid enough to slot straight in without a bag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn ammonia and nitrite test kit\u003c\/strong\u003e — confirm the media is cycled before stocking up.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eThe MarinePure Plate has no stated wear-out life from CerMedia — it's ceramic, not a consumable cartridge — and any manufacturing fault is covered by your rights under Australian Consumer Law in addition to any retailer or manufacturer terms. Standard parcel freight applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I cut the Plate to a custom size?\u003c\/h4\u003e\u003cp\u003eYes — it's rigid ceramic and can be cut with a hacksaw or angle grinder to fit a sump baffle or an odd-shaped compartment. Cutting it doesn't damage the remaining piece's biological performance.\u003c\/p\u003e\u003ch4\u003eDo I need a mesh bag for the Plate?\u003c\/h4\u003e\u003cp\u003eNo — it's rigid enough to sit directly in a sump compartment or media rack. A bag is only needed for loose media like Spheres, GEMS or PODs.\u003c\/p\u003e\u003ch4\u003eIs the Plate reef safe?\u003c\/h4\u003e\u003cp\u003eYes, the ceramic is inert and safe for reef and marine systems as well as freshwater.\u003c\/p\u003e\u003ch4\u003eDo I need to cycle a filter before adding livestock?\u003c\/h4\u003e\u003cp\u003eYes. Any new biomedia needs time for bacteria to colonise the ceramic before it's doing useful biological work. Run it on established tank water, or fishless-cycle with an ammonia source, before stocking up.\u003c\/p\u003e","brand":"MarinePure","offers":[{"title":"Default Title","offer_id":54773874131235,"sku":"100894","price":92.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/100894.jpg?v=1782705649"},{"product_id":"marinepure-spheres","title":"MarinePure Spheres","description":"\u003cp\u003e\u003cstrong\u003eOne sphere replaces roughly 1,350 plastic bio-balls in the same space.\u003c\/strong\u003e MarinePure Spheres are 38 mm (1.5\") ultra-porous ceramic biomedia made by CerMedia in the USA. The open, interconnected pore structure gives bacteria a huge surface to colonise, so a modest volume of spheres does the biological filtration work of a much larger volume of plastic media — and the deep pores support the low-oxygen zones that also help bring nitrate down.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-porous ceramic\u003c\/strong\u003e — fired above 1,000°C, inert, and never leaches into the water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandles ammonia and nitrite\u003c\/strong\u003e — the primary biological filtration job, at high flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps reduce nitrate\u003c\/strong\u003e — deep pores create low-oxygen zones plastic bio-balls can't replicate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree-pours into any filter\u003c\/strong\u003e — canister filters, sumps, wet\/dry towers and trickle filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and marine\u003c\/strong\u003e — the same media works in either\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNever needs replacing\u003c\/strong\u003e — inert ceramic doesn't wear out or break down biologically\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eApprox. media volume\u003c\/th\u003e\n\u003cth\u003eSuitability\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.9 L Box\u003c\/td\u003e\n\u003ctd\u003e100892\u003c\/td\u003e\n\u003ctd\u003e2 US quarts\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.8 L Box\u003c\/td\u003e\n\u003ctd\u003e100893\u003c\/td\u003e\n\u003ctd\u003e1 US gallon\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18.9 L Bucket\u003c\/td\u003e\n\u003ctd\u003e102688\u003c\/td\u003e\n\u003ctd\u003e5 US gallons\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e56 L Half-Drum\u003c\/td\u003e\n\u003ctd\u003e102666\u003c\/td\u003e\n\u003ctd\u003e~15 US gallons\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 L Drum\u003c\/td\u003e\n\u003ctd\u003e100896\u003c\/td\u003e\n\u003ctd\u003e~26 US gallons\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eHow much filtration does it provide?\u003c\/h3\u003e\u003cp\u003eCerMedia rates MarinePure media at roughly 1 part media to 500 parts tank water for ongoing ammonia and nitrite control, so the tank volume a pack supports scales directly with the pack size:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eMedia volume\u003c\/th\u003e\n\u003cth\u003eApprox. tank volume supported\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.9 L Box\u003c\/td\u003e\n\u003ctd\u003e1.9 L\u003c\/td\u003e\n\u003ctd\u003e~950 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.8 L Box\u003c\/td\u003e\n\u003ctd\u003e3.8 L\u003c\/td\u003e\n\u003ctd\u003e~1,900 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18.9 L Bucket\u003c\/td\u003e\n\u003ctd\u003e18.9 L\u003c\/td\u003e\n\u003ctd\u003e~9,450 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e56 L Half-Drum\u003c\/td\u003e\n\u003ctd\u003e56 L\u003c\/td\u003e\n\u003ctd\u003e~28,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 L Drum\u003c\/td\u003e\n\u003ctd\u003e100 L\u003c\/td\u003e\n\u003ctd\u003e~50,000 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThese are guide figures for a typically stocked tank, not a hard ceiling — a lightly stocked system will comfortably run on less, and a heavily stocked one benefits from sitting toward the next size up.\u003c\/p\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eMatch the pack to your system volume against the table above, then round up if your tank is heavily stocked or you're running the media as your only biological stage. Multiple smaller packs can be combined — the total media volume is what counts, not the number of boxes.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for any freshwater or marine system using a canister filter, sump, wet\/dry tower or trickle filter. Not suitable as the sole filtration in systems that also need mechanical filtration — MarinePure handles the biological stage only, and pore-clogging debris should be caught upstream by a mechanical stage first.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRinse before first use — a tap-water rinse followed by a tank-water rinse clears shipping dust from the pores\u003c\/li\u003e\n\u003cli\u003eKeep mechanical filtration upstream so debris doesn't clog the pore structure\u003c\/li\u003e\n\u003cli\u003eRinse gently in removed tank water roughly every three months, or when flow through the media noticeably slows\u003c\/li\u003e\n\u003cli\u003eNever rinse in tap water once established — chlorine and chloramine will kill the bacterial colony\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003eA MarinePure Vault keeps loose spheres contained and easy to lift out for cleaning, rather than loose in the sump. A mesh media bag sized to the pack does the same job in a canister filter basket.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eMarinePure ceramic media carries no manufacturer warranty as such — it's an inert, non-mechanical product with nothing to fail — and is covered by the consumer guarantees available under Australian Consumer Law regardless. Standard freight applies to the box and bucket sizes; the 56 L half-drum and 100 L drum are bulky items and may attract an oversize freight surcharge at checkout.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I mix MarinePure Spheres with my existing bio-balls or ceramic rings?\u003c\/h4\u003e\u003cp\u003eYes. MarinePure can be added alongside existing biomedia — there's no compatibility issue — though replacing the older media over time makes better use of your filter's volume.\u003c\/p\u003e\u003ch4\u003eDo I need to cycle the tank again after adding MarinePure?\u003c\/h4\u003e\u003cp\u003eNo, provided you're adding it to an already-cycled system. The spheres will pick up bacterial colonisation from the existing water within days rather than starting from zero.\u003c\/p\u003e\u003ch4\u003eWill MarinePure lower my nitrate on its own?\u003c\/h4\u003e\u003cp\u003eIt helps. The low-oxygen zones deep inside each sphere support denitrifying bacteria, but nitrate control also depends on stocking, feeding and water changes — MarinePure is one part of the picture, not a standalone fix.\u003c\/p\u003e\u003ch4\u003eCan I use MarinePure in a sump without a container?\u003c\/h4\u003e\u003cp\u003eYes, it can be poured loose into a sump baffle chamber, but a MarinePure Vault or a mesh bag makes it far easier to remove for its occasional rinse.\u003c\/p\u003e\u003ch4\u003eIs MarinePure reef safe?\u003c\/h4\u003e\u003cp\u003eYes. It's an inert fired ceramic with nothing to leach, and is used in both freshwater and marine systems including reef tanks.\u003c\/p\u003e","brand":"MarinePure","offers":[{"title":"1.9L Box","offer_id":54773874295075,"sku":"100892","price":95.95,"currency_code":"AUD","in_stock":false},{"title":"3.8L Box","offer_id":55335328121123,"sku":"100893","price":173.95,"currency_code":"AUD","in_stock":false},{"title":"18.9L Bucket","offer_id":55335328153891,"sku":"102688","price":593.95,"currency_code":"AUD","in_stock":false},{"title":"56L Half-Drum","offer_id":55335328186659,"sku":"102666","price":1723.95,"currency_code":"AUD","in_stock":false},{"title":"100L Drum","offer_id":55335328219427,"sku":"100896","price":2800.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/100892.jpg?v=1782705645"},{"product_id":"marinepure-pods","title":"MarinePure PODs","description":"\u003cp\u003e\u003cstrong\u003eOne POD replaces thousands of plastic bio-balls for the same job.\u003c\/strong\u003e MarinePure PODs are ultra-porous ceramic biomedia spheres about 8 cm (3.1\") across, made by CerMedia (USA) from the same inert aluminosilicate ceramic as MarinePure Spheres and the Plate. CerMedia states a single POD carries the equivalent surface area of over 5,000 plastic bio-balls, and sells them in a 3-pack sized for a canister filter or small sump, or a 24-pack sized for a full sump or large canister setup.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent to 5,000+ bio-balls per POD\u003c\/strong\u003e — CerMedia's own comparison figure for the surface area a single POD carries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished bioload ratings\u003c\/strong\u003e — CerMedia rates the 3-pack to 100 US gallons and the 24-pack to 750 US gallons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResists clogging\u003c\/strong\u003e — the rigid ceramic structure holds its shape, so flow through the media stays consistent between cleans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — rinse in tank water at a water change rather than replacing on a schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSits loose or bagged\u003c\/strong\u003e — large enough to sit directly in a sump compartment, or contained in a MarinePure Mesh Bag for easy handling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMarinePure (CerMedia, USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePod diameter\u003c\/th\u003e\n\u003ctd\u003eApprox. 8 cm (3.1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eInert aluminosilicate ceramic, fired above 1,000°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpen porosity\u003c\/th\u003e\n\u003ctd\u003e80–90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface area\u003c\/th\u003e\n\u003ctd\u003eEquivalent to over 5,000 plastic bio-balls, per POD (CerMedia comparison figure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich pack size do I need?\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eCerMedia bioload rating\u003c\/th\u003e\n\u003cth\u003eBest suited to\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-pack\u003c\/td\u003e\n\u003ctd\u003eUp to 100 US gallons (380 L)\u003c\/td\u003e\n\u003ctd\u003eA canister filter or small sump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24-pack\u003c\/td\u003e\n\u003ctd\u003eUp to 750 US gallons (2,839 L)\u003c\/td\u003e\n\u003ctd\u003eA full sump or large display system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eBoth packs use the same POD, so there's no difference in performance per piece — only in how much total surface area you're buying. Split the difference by buying more 3-packs if 100-gallon increments suit your sump better than committing to a full 24-pack.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e sump compartments, canister filters and media racks in freshwater or marine systems, including reef tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e tight hang-on-back baskets built for loose pellets — MarinePure GEMS suits those spaces better than a full-size POD. Not a mechanical or chemical media — it won't polish water or remove odours on its own.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse PODs in tank water or dechlorinated water at a water change — never under tap water straight from the mains, since chlorine and chloramine will knock back the bacterial colony. There's no fixed replacement interval; the ceramic doesn't wear out, so PODs keep working until they're due for a clean.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarinePure Mesh Bag (Medium)\u003c\/strong\u003e — contains a 3-pack for easy lift-out and rinsing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn ammonia and nitrite test kit\u003c\/strong\u003e — confirm the media is cycled before stocking up.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eMarinePure PODs have no stated wear-out life from CerMedia — they're ceramic, not a consumable cartridge — and any manufacturing fault is covered by your rights under Australian Consumer Law in addition to any retailer or manufacturer terms. Standard parcel freight applies; the 24-pack is heavier and may attract a higher freight quote at checkout, though it ships as standard parcel post.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eDo I need a mesh bag for PODs?\u003c\/h4\u003e\u003cp\u003eNot necessarily — PODs are large enough to sit loose in a sump compartment or media rack. A Mesh Bag makes them easier to lift out for a rinse, but isn't required for them to work.\u003c\/p\u003e\u003ch4\u003eCan I mix POD pack sizes to reach a specific bioload target?\u003c\/h4\u003e\u003cp\u003eYes — CerMedia's bioload ratings scale with the number of PODs, so combining a 3-pack and a 24-pack, or buying multiple 3-packs, is a valid way to size up gradually.\u003c\/p\u003e\u003ch4\u003eAre PODs reef safe?\u003c\/h4\u003e\u003cp\u003eYes, the ceramic is inert and safe for reef and marine systems as well as freshwater.\u003c\/p\u003e\u003ch4\u003eDo I need to cycle a filter before adding livestock?\u003c\/h4\u003e\u003cp\u003eYes. Any new biomedia needs time for bacteria to colonise the ceramic before it's doing useful biological work. Run it on established tank water, or fishless-cycle with an ammonia source, before stocking up.\u003c\/p\u003e","brand":"MarinePure","offers":[{"title":"3pk","offer_id":54773874393379,"sku":"124739","price":48.95,"currency_code":"AUD","in_stock":false},{"title":"24pk","offer_id":55335328088355,"sku":"124740","price":238.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/124739.jpg?v=1782705667"},{"product_id":"red-sea-reefer-225-micron-felt-filter-bag-100mm-260mm","title":"Red Sea Reefer 225 Micron Felt Filter Bag 100mm\/260mm","description":"\u003cp\u003e\u003cstrong\u003eTraps fine detritus before it clouds your sump water.\u003c\/strong\u003e This genuine Red Sea 225-micron felt filter bag (100 mm ring, 260 mm length) is sized for Red Sea's standard 4\"\/10 cm filter bag holder, fitted across the REEFER and MAX-S ranges. The felt weave holds more debris between cleans than an equivalent mesh bag at the same micron rating.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e225-micron felt construction\u003c\/strong\u003e — Red Sea's own mid-weight option, built for regular day-to-day use with a longer run between cleans than their thin-mesh bags.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 100 mm\/260 mm sizing\u003c\/strong\u003e — fits any standard 4\"\/10 cm filter bag holder, including REEFER and MAX-S sumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — hose off trapped detritus, or soak in a diluted bleach or vinegar solution for 24 hours for a deeper clean.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eRed Sea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eFelt filter bag (mechanical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMicron rating\u003c\/td\u003e\n\u003ctd\u003e225 micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e100 mm ring, 260 mm length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOur SKU\u003c\/td\u003e\n\u003ctd\u003eRED519\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits\u003c\/td\u003e\n\u003ctd\u003eRed Sea REEFER and MAX-S ranges; any standard 4\"\/10 cm filter bag holder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWill it fit my tank?\u003c\/h3\u003e\u003cp\u003eYes, if your sump uses Red Sea's standard 100 mm (4\") filter bag holder — this covers the REEFER and MAX-S ranges. If you're not sure which holder size your sump uses, measure the ring diameter of your existing filter sock before ordering.\u003c\/p\u003e\u003ch3\u003eWhich micron rating do I need?\u003c\/h3\u003e\u003cp\u003eRed Sea sells this bag in three finishes at the same 100 mm\/260 mm size. Felt bags hold more debris between cleans; mesh bags are easier to rinse clean but need changing more often.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBag\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 micron felt\u003c\/td\u003e\n\u003ctd\u003eFine polishing on a mature, low-particulate tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e225 micron felt (this bag)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRegular day-to-day use — the longest run between cleans\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e225 micron thin-mesh\u003c\/td\u003e\n\u003ctd\u003eNew setups or after heavy maintenance, when there's a lot of particulate to catch and rinse out often\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e REEFER and MAX-S sumps, and any other system using a standard 100 mm\/4\" filter bag holder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e sumps or canister filters using a different holder size — check your ring diameter first.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse or hose off trapped detritus regularly — waste left sitting in the flow leaches nutrients straight back into the water. For a deeper clean, soak in a diluted bleach or vinegar solution for 24 hours, then rinse thoroughly before refitting. Red Sea recommends keeping at least three bags in rotation so a clean one is always ready.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Red Sea's standard manufacturer warranty against manufacturing defects, in addition to your rights under the Australian Consumer Law. Ships standard.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow often should I change the bag?\u003c\/h4\u003e\u003cp\u003eRed Sea doesn't publish a fixed interval — rinse or swap it whenever flow through the bag visibly slows, or on your usual maintenance day.\u003c\/p\u003e\u003ch4\u003eCan I bleach it to clean it?\u003c\/h4\u003e\u003cp\u003eYes — a diluted bleach or vinegar soak for 24 hours followed by a thorough rinse is Red Sea's own recommended deep-clean method.\u003c\/p\u003e\u003ch4\u003eWhat's the difference between felt and mesh?\u003c\/h4\u003e\u003cp\u003eFelt holds more debris before it needs cleaning; thin-mesh is easier to rinse but clogs and needs attention sooner.\u003c\/p\u003e\u003ch4\u003eWill this fit my canister filter?\u003c\/h4\u003e\u003cp\u003eOnly if it uses a standard 100 mm\/4\" filter bag holder — most canister filters use their own proprietary media baskets instead.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774155870499,"sku":"RED519","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/225-Micron-Felt.jpg?v=1782112664"},{"product_id":"red-sea-reefer-225-micron-thin-mesh-filter-bag-100mm-260mm","title":"Red Sea Reefer 225 Micron Thin Mesh Filter Bag 100mm\/260mm","description":"\u003cp\u003e\u003cstrong\u003eA 225-micron thin-mesh filter sock for Reefer and MAX-S sumps, sized to fit a standard 100mm (4\") bag holder.\u003c\/strong\u003e This is Red Sea's monofilament mesh version of the Reefer filter bag family — built to catch detritus in a new setup or straight after a heavy clean-up.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e225-micron thin mesh\u003c\/strong\u003e — coarser than the 100-micron felt option, so it clears more water for longer before it needs a rinse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonofilament construction\u003c\/strong\u003e — rinses and dries faster than felt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mm ring, 260mm length\u003c\/strong\u003e — fits a standard 4\"\/10cm Red Sea filter bag holder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoubles as a media holder\u003c\/strong\u003e — Red Sea notes it can also hold loose filter media.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMicron rating\u003c\/th\u003e\n\u003ctd\u003e225 micron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eThin monofilament mesh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRing diameter\u003c\/th\u003e\n\u003ctd\u003e100 mm (4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e260 mm (10.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eRED519a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWill it fit my sump?\u003c\/h3\u003e\n\u003cp\u003eRed Sea states this bag fits REEFER and MAX-S systems using a standard 4\"\/10cm filter bag holder. Red Sea does not publish an itemised list of every Reefer size and generation using this holder diameter, so if unsure, measure your existing holder or check with us first.\u003c\/p\u003e\n\u003ch3\u003eWhich mesh do I need?\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFelt, 100 micron\u003c\/td\u003e\n\u003ctd\u003eFine polishing on a mature, already-clean system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFelt, 225 micron\u003c\/td\u003e\n\u003ctd\u003eEveryday use — longer between cleans than 100-micron felt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThin mesh, 225 micron (this bag)\u003c\/td\u003e\n\u003ctd\u003eNew setups or heavy particulate load — rinses faster than felt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for marine, reef and freshwater sumps using the same 100mm holder. Not a substitute for biological or chemical filtration.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRed Sea recommends keeping at least three bags in rotation. Back-flush with a garden hose, or soak in diluted vinegar or bleach for 24 hours and rinse thoroughly; a cold machine wash with regular detergent also works. Replace when flow slows noticeably — Red Sea doesn't publish a fixed replacement interval.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cp\u003eA second and third bag for rotation, and Red Sea's felt filter bags for a finer polish once your system has matured.\u003c\/p\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by your consumer guarantee rights under Australian Consumer Law. Standard parcel delivery.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill this fit my Reefer sump?\u003c\/h4\u003e\n\u003cp\u003eIf your existing filter bag holder is the standard 100mm (4\") size, yes. Red Sea confirms this bag fits REEFER and MAX-S systems on that holder size.\u003c\/p\u003e\n\u003ch4\u003eHow is thin mesh different from felt?\u003c\/h4\u003e\n\u003cp\u003eMesh is a looser, monofilament weave that rinses clean in seconds and dries fast. Felt polishes finer but clogs sooner.\u003c\/p\u003e\n\u003ch4\u003eCan I put other media in the bag?\u003c\/h4\u003e\n\u003cp\u003eYes — Red Sea notes it can double as a holder for loose mechanical or chemical filter media.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774155903267,"sku":"RED519a","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/1fd93e88bcc1894cc91aab1e0ae68da7929634ad.jpg?v=1782112666"},{"product_id":"red-sea-reefer-100-micron-felt-fine-polish-filter-bag-100mm-260mm","title":"Red Sea Reefer 100 Micron Felt Fine Polish Filter Bag 100mm\/260mm","description":"\u003cp\u003e\u003cstrong\u003ePolishes reef water to a genuine, lasting sparkle.\u003c\/strong\u003e This Red Sea 100-micron felt filter bag is the fine \"polishing\" sock for mature systems that are already running clear — it catches what a coarser bag lets straight through. Built to the standard 4\"\/10 cm ring, it drops straight into a REEFER or MAX-S sump without modification.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100-micron felt media\u003c\/strong\u003e — fine enough to polish water that's already low in particulate, where a 225-micron bag lets fine haze through.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 4\"\/10 cm holder fit\u003c\/strong\u003e — the ring size used across Red Sea's REEFER and MAX-S filter sock holders, no adapter needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine-washable felt\u003c\/strong\u003e — rinse and reuse for several cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart of a three-bag family\u003c\/strong\u003e — also available in 225-micron felt and 225-micron thin-mesh, so the grade matches the job.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMicron rating\u003c\/th\u003e\n\u003ctd\u003e100 micron (felt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRing diameter\u003c\/th\u003e\n\u003ctd\u003e100 mm (4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBag length\u003c\/th\u003e\n\u003ctd\u003e260 mm (10.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eFelt (polishing grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eStandard 4\"\/10 cm Red Sea filter bag holder — REEFER and MAX-S systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReuse\u003c\/th\u003e\n\u003ctd\u003eMachine-washable, multiple cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRed Sea reference\u003c\/th\u003e\n\u003ctd\u003eRED519c (barcode 7290100779743)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWill it fit my tank?\u003c\/h3\u003e\n\u003cp\u003eIf your sump uses Red Sea's standard 4\"\/10 cm filter bag holder — fitted to REEFER and MAX-S sumps — this bag drops straight in. Check your holder against the 100 mm\/260 mm measurement, since holder size hasn't been confirmed on every Red Sea line.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e REEFER and MAX-S sumps at the polishing stage — water that's already clear and just needs the last haze pulled out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e new setups or heavy post-maintenance cloudiness, where the fine weave clogs fast — use a 225-micron felt or thin-mesh bag instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRinse as soon as it's pulled, before debris dries into the felt, and machine-wash cold without fabric softener. Replace once it stays grey after washing or the weave frays.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e225 Micron Felt Filter Bag\u003c\/strong\u003e — the everyday-use grade between big cleans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e225 Micron Thin-Mesh Filter Bag\u003c\/strong\u003e — for new setups and the days after heavy maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered against manufacturing defects in addition to your rights under Australian Consumer Law. Standard freight — small and lightweight, no special handling.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill this fit my MAX Nano or MAX E system?\u003c\/h4\u003e\n\u003cp\u003eRed Sea specifies this bag for REEFER and MAX-S, which share the 4\"\/10 cm holder. We haven't confirmed the holder size on MAX Nano or MAX E — check your holder's ring diameter against 100 mm before ordering.\u003c\/p\u003e\n\u003ch4\u003eHow is 100 micron different from 225 micron?\u003c\/h4\u003e\n\u003cp\u003eThe number is the particle size the felt catches, in microns — lower means finer. 100 micron is the polishing grade for water that's already clear; 225 micron suits everyday use or heavier debris.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774155968803,"sku":"RED519c","price":18.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/9f2f8310eef95790d15ee6683b9e6ca0dc19f9ce.jpg?v=1782108751"},{"product_id":"red-sea-reef-spec-carbon","title":"Red Sea Reef Spec Carbon","description":"\u003cp\u003e\u003cstrong\u003eClear, yellow-free reef water without the phosphate trade-off.\u003c\/strong\u003e Red Sea Reef-Spec Carbon is a low-dust, low-phosphate activated carbon that strips dissolved organics and the yellowing compounds that dull reef lighting, without leaching phosphate back into a phosphate-sensitive system. It comes in four pack sizes — 200 mL, 500 mL, 1000 mL and 2000 mL — to suit anything from a nano reef to a large display.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low phosphate leaching\u003c\/strong\u003e — rated below 0.000001 g of phosphate per mL, so it won't undo your reef's nutrient control while it works.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow dust\u003c\/strong\u003e — minimal rinsing before use and no black clouding on start-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh adsorption capacity\u003c\/strong\u003e — rated at up to 1,000 mg of small organic molecules per gram, which is what actually clears yellow tint and dissolved odours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine 0.6–2.3 mm granules\u003c\/strong\u003e pack densely enough to work in a small reactor without channelling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour pack sizes\u003c\/strong\u003e so you can match the dose to your system without buying more than you'll use before it exhausts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e200 mL\u003c\/td\u003e\n\u003ctd\u003eRED533\u003c\/td\u003e\n\u003ctd\u003e7290100775950\u003c\/td\u003e\n\u003ctd\u003e$13.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003eRED528\u003c\/td\u003e\n\u003ctd\u003e7290100775806\u003c\/td\u003e\n\u003ctd\u003e$22.50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 mL\u003c\/td\u003e\n\u003ctd\u003eRED529\u003c\/td\u003e\n\u003ctd\u003e7290100775813\u003c\/td\u003e\n\u003ctd\u003e$38.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000 mL\u003c\/td\u003e\n\u003ctd\u003eRED531\u003c\/td\u003e\n\u003ctd\u003e7290100775820\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eGranule size 0.6–2.3 mm. Adsorption capacity approximately 1,000 mg\/g for small organic molecules and 280 mg\/g for large organic molecules. Phosphate leaching below 0.000001 g per mL. Fresh and marine, reef safe.\u003c\/p\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eRed Sea doses this carbon at approximately 100 mL per 200 L of system water for general clarity and yellow-tint removal, replaced every 6–8 weeks or once it's visibly reduced to about half its original volume. For heavier post-medication clean-up, double that to 200 mL per 200 L, run for about a week. Run it in a media bag or reactor with 1,000–1,500 L\/h of flow per 50 g (roughly 100 mL) of carbon.\u003c\/p\u003e\u003cp\u003eScaled against that dose rate, here's what each pack treats through one carbon cycle, and what that works out to per litre of tank water:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eTreats per cycle\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e200 mL\u003c\/td\u003e\n\u003ctd\u003e~400 L\u003c\/td\u003e\n\u003ctd\u003e$13.50\u003c\/td\u003e\n\u003ctd\u003e3c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e~1,000 L\u003c\/td\u003e\n\u003ctd\u003e$22.50\u003c\/td\u003e\n\u003ctd\u003e2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 mL\u003c\/td\u003e\n\u003ctd\u003e~2,000 L\u003c\/td\u003e\n\u003ctd\u003e$38.00\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000 mL\u003c\/td\u003e\n\u003ctd\u003e~4,000 L\u003c\/td\u003e\n\u003ctd\u003e$60.00\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe 1000 mL and 2000 mL packs work out cheapest per litre treated — buy a smaller size for a nano tank you don't want sitting on an opened pack for months, and step up once your system is over roughly 1,000 L in total volume.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse briefly before use to settle any fine dust. Run in a media bag or reactor, not loose in a sump. Replace on schedule rather than waiting for it to visibly fail — exhausted carbon stops adsorbing well before it looks used up, and old carbon left in the flow path can start releasing what it's already trapped.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for reef, FOWLR and freshwater systems where you want clearer water and controlled phosphate. Not a substitute for a dedicated phosphate remover if your issue is elevated phosphate rather than dissolved organics and tint — pair it with a phosphate-specific media for that job.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003ePairs with a Red Sea Reef-Spec media bag to keep granules contained in a sump, or a media reactor where you want guaranteed flow through the bed rather than around it.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eConsumable filter media, sold as new stock — not covered by a mechanical warranty, in addition to your rights under Australian Consumer Law. Ships as standard parcel freight.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I run this loose in my sump instead of a media bag?\u003c\/h4\u003e\u003cp\u003eYou can, but a media bag or reactor keeps the granules from spreading through your system and makes replacement straightforward. Loose carbon is harder to fully remove later.\u003c\/p\u003e\u003ch4\u003eHow do I know when it's exhausted?\u003c\/h4\u003e\u003cp\u003eWatch the calendar rather than the water — carbon usually stops working well before the water looks any different. Replace every 6–8 weeks, or once the pack has visibly reduced to about half its original volume.\u003c\/p\u003e\u003ch4\u003eWill it affect my corals?\u003c\/h4\u003e\u003cp\u003eNo — it's formulated with very low phosphate leaching specifically for reef systems, so used and replaced on schedule it shouldn't push phosphate into your water.\u003c\/p\u003e\u003ch4\u003eDoes it work in freshwater tanks?\u003c\/h4\u003e\u003cp\u003eYes, it's suitable for both freshwater and marine systems.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"200ml","offer_id":54774156755235,"sku":"RED533","price":13.5,"currency_code":"AUD","in_stock":false},{"title":"500ml","offer_id":55335138722083,"sku":"RED528","price":22.5,"currency_code":"AUD","in_stock":false},{"title":"1000ml","offer_id":55335138754851,"sku":"RED529","price":38.0,"currency_code":"AUD","in_stock":true},{"title":"2000ml","offer_id":55335138787619,"sku":"RED531","price":60.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/RED533.png?v=1772078726"},{"product_id":"red-sea-reef-media-cup","title":"Red Sea Reef Media Cup","description":"\u003cp\u003e\u003cstrong\u003ePuts your filter media directly in the water path instead of sitting loose in a corner of the sump.\u003c\/strong\u003e The Red Sea Reef Media Cup is a drop-in replacement for a filter sock mount, holding a reusable media bag with slots that force water down through whatever you've loaded — carbon, GFO, biopellets or filter floss — rather than letting it bypass around the outside.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForces full contact with your media\u003c\/strong\u003e — slotted at the base so water has to pass through the bag, not around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits existing filter sock mounting hardware\u003c\/strong\u003e — a cost-effective, reusable swap for disposable filter socks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHolds about 1 L of media\u003c\/strong\u003e — enough for a working charge of carbon, GFO, biopellets or a biological rubble media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes one REEF SPEC media bag\u003c\/strong\u003e — sized to the cup, ready to load.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWill it fit my tank?\u003c\/h3\u003e\u003cp\u003eWorks with all Red Sea REEFER systems and most Red Sea MAX systems — the exception is the MAX Nano, which this cup doesn't fit. It's also compatible with most pre-made sumps that take a standard filter sock, since it mounts the same way a sock does.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCup dimensions\u003c\/th\u003e\n\u003ctd\u003e10 x 20 cm (4 x 8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum sock-mount opening\u003c\/th\u003e\n\u003ctd\u003e9 cm (3.5 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia capacity\u003c\/th\u003e\n\u003ctd\u003e≈1 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded media bag\u003c\/th\u003e\n\u003ctd\u003e13 x 25 cm (5 x 10 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eAll Red Sea REEFER systems; Red Sea MAX systems except MAX Nano; most pre-made sumps with standard sock mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e carbon, GFO, biopellets, filter floss and other bagged media, on REEFER and MAX (excluding MAX Nano) systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the MAX Nano, or sumps without a compatible sock-style mount.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eLift the cup out, swap or top up the media bag, and drop it back in — no need to disturb the rest of the sump. Replace or recharge media on the schedule the media itself specifies, since the cup only controls flow through it.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Red Sea's manufacturer warranty against defects, in addition to your rights under Australian Consumer Law. Standard shipping across Australia.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eDoes this replace my filter sock or sit alongside it?\u003c\/h4\u003e\u003cp\u003eIt replaces it — the cup mounts in the same spot a filter sock would, so you're not running both at once in that position.\u003c\/p\u003e\u003ch4\u003eWhat media can I put in it?\u003c\/h4\u003e\u003cp\u003eAnything bagged: carbon, GFO, biopellets, filter floss, or a biological rubble media. The slotted base is what forces flow through it, not the media type.\u003c\/p\u003e\u003ch4\u003eWill it fit my MAX Nano?\u003c\/h4\u003e\u003cp\u003eNo — Red Sea specifically excludes the MAX Nano from this cup's compatibility. Check with us if you're not sure which MAX model you have.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774156820771,"sku":"RED534","price":50.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/RED534_4.png?v=1772078729"},{"product_id":"red-sea-reef-spec-media-bag-1000ml-2bags-24-x-14cm","title":"Red Sea Reef Spec Media Bag 1000ml 2Bags 24 x 14cm","description":"\u003cp\u003e\u003cstrong\u003eKeep loose filter media exactly where it belongs.\u003c\/strong\u003e This two-pack of Red Sea Reef-Spec media bags holds up to 1000 mL of carbon, phosphate remover or other loose media each, in a fine mesh that contains granules while still letting water pass freely through the bed.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo bags per pack\u003c\/strong\u003e — run one while you prepare the next, so a media change never leaves your filter empty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1000 mL capacity each\u003c\/strong\u003e, sized for a standard media reactor chamber or sump filter basket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 × 14 cm\u003c\/strong\u003e with a secure closure that won't work loose in flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine mesh\u003c\/strong\u003e — contains carbon and other granular media without letting fines escape into your system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — rinse and refill through many media changes rather than buying new bags each time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack contents\u003c\/td\u003e\n\u003ctd\u003e2 × media bags\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBag size\u003c\/td\u003e\n\u003ctd\u003e24 × 14 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 mL of media per bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eRED535\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarcode\u003c\/td\u003e\n\u003ctd\u003e7290100771068\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for freshwater and marine systems, and for any loose granular or pelleted media — carbon, phosphate remover, GFO. Not intended for fine powdered media, which can work through the mesh; use a finer specialist bag for that.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse before first use and between media changes. Replace the bag itself if the mesh stretches, tears or the closure stops holding.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003ePairs with Red Sea Reef-Spec Carbon or any loose granular media you're running in a reactor or sump basket.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSold as new stock; not a mechanical item requiring a manufacturer warranty, in addition to your rights under Australian Consumer Law. Ships as standard parcel freight.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill fine carbon dust leak through the mesh?\u003c\/h4\u003e\u003cp\u003eSome very fine dust can pass through any media bag on first use — a quick rinse before running it removes most of this.\u003c\/p\u003e\u003ch4\u003eCan I use these for phosphate remover or GFO instead of carbon?\u003c\/h4\u003e\u003cp\u003eYes — the mesh is sized for granular and pelleted media generally, not specifically for carbon.\u003c\/p\u003e\u003ch4\u003eHow many times can I reuse a bag?\u003c\/h4\u003e\u003cp\u003eMany media changes, provided the mesh and closure stay intact — check both each time you refill.\u003c\/p\u003e\u003ch4\u003eWill this fit in my media reactor?\u003c\/h4\u003e\u003cp\u003eAt 24 × 14 cm it suits most standard reactor chambers and sump filter baskets sized for up to 1000 mL of media; check your reactor's chamber dimensions if it's a compact or nano unit.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774156853539,"sku":"RED535","price":22.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/RED535_4.jpg?v=1772078729"},{"product_id":"red-sea-reefmat-fleece-mat-250","title":"Red Sea ReefMat Fleece Mat 250","description":"\u003cp\u003e\u003cstrong\u003eGenuine replacement fleece for the ReefMat 250.\u003c\/strong\u003e This is Red Sea's own replacement roll for the ReefMat 250 automatic roller filter — the correct width and material grade to load straight into the unit and keep continuous mechanical filtration running once the current roll is spent.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect fit, first time\u003c\/strong\u003e — sized specifically for the ReefMat 250; the 500 and 1200 use wider fleece and won't seat correctly in a 250.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-woven polyester fleece\u003c\/strong\u003e — the same fine mechanical media grade fitted as standard to a new ReefMat 250.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e32 m per roll\u003c\/strong\u003e — good for roughly 5–8 weeks on a moderately stocked reef system before the next change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrops straight onto the dispensing shaft\u003c\/strong\u003e — no cutting or trimming to width.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eRed Sea ReefMat 250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003ctd\u003e8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll length\u003c\/th\u003e\n\u003ctd\u003e32 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eNon-woven polyester, approx. 50 g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical roll life\u003c\/th\u003e\n\u003ctd\u003eRoughly 5–8 weeks on a moderately stocked reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eRED852a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich roll do I need?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFilter unit\u003c\/th\u003e\n\u003cth\u003eFleece roll needed\u003c\/th\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 250\u003c\/td\u003e\n\u003ctd\u003eThis roll (RED852a)\u003c\/td\u003e\n\u003ctd\u003e8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 500\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/red-sea-reefmat-fleece-mat-500\"\u003eReefMat 500 fleece roll\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e11.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 1200\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/red-sea-reefmat-fleece-mat-1200\"\u003eReefMat 1200 fleece roll\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e17 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe three widths aren't interchangeable — a roll cut for the 500 or 1200 won't seat correctly on a 250's narrower dispensing shaft. Check your unit's model before ordering.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable only as a replacement for the Red Sea ReefMat 250. Not compatible with the ReefMat 500 or 1200, and not a fit for other brands' roller filters — Red Sea's dispensing mechanism and shaft width are specific to the ReefMat range.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003eKeep a spare roll on the shelf rather than waiting on the ReefBeat app's low-roll alert — a filtration gap while a delivery is in transit is the one situation the alert can't prevent. A \u003ca href=\"\/products\/red-sea-reefmat-nano-250-500-1200-power-supply\"\u003espare ReefMat power supply\u003c\/a\u003e is worth keeping on hand for the same reason.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eAs a consumable filtration media, this roll isn't covered under Red Sea's equipment warranty. Standard parcel delivery applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this fit my ReefMat 500 or 1200?\u003c\/h4\u003e\u003cp\u003eNo. Each ReefMat size uses a different fleece width — this roll is cut specifically for the ReefMat 250's 8 cm dispensing shaft.\u003c\/p\u003e\u003ch4\u003eHow long does one roll last?\u003c\/h4\u003e\u003cp\u003eRoughly 5–8 weeks on a moderately stocked reef system. Heavier bioloads or bare-bottom tanks use fleece faster; the ReefBeat app tracks your unit's actual usage and gives advance notice before the roll runs out.\u003c\/p\u003e\u003ch4\u003eCan I cut a wider roll down to fit the 250?\u003c\/h4\u003e\u003cp\u003eNot recommended — the dispensing and take-up shafts are matched to each model's specific width, and a cut edge can fray and jam the mechanism.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774162096419,"sku":"RED852a","price":28.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Red-Sea-ReefMat-250-Fleece-Roll.jpg?v=1782112670"},{"product_id":"red-sea-reefmat-fleece-mat-500","title":"Red Sea ReefMat Fleece Mat 500","description":"\u003cp\u003e\u003cstrong\u003eGenuine replacement fleece for the ReefMat 500.\u003c\/strong\u003e This is Red Sea's own replacement roll for the ReefMat 500 automatic roller filter — the correct width and material grade to load straight into the unit and keep continuous mechanical filtration running once the current roll is spent.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect fit, first time\u003c\/strong\u003e — sized specifically for the ReefMat 500; the 250 and 1200 use different fleece widths and won't seat correctly in a 500.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-woven polyester fleece\u003c\/strong\u003e — the same fine mechanical media grade fitted as standard to a new ReefMat 500.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28 m per roll\u003c\/strong\u003e — good for roughly 5–8 weeks on a moderately stocked reef system before the next change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrops straight onto the dispensing shaft\u003c\/strong\u003e — no cutting or trimming to width.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eRed Sea ReefMat 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003ctd\u003e11.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll length\u003c\/th\u003e\n\u003ctd\u003e28 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eNon-woven polyester, approx. 50 g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical roll life\u003c\/th\u003e\n\u003ctd\u003eRoughly 5–8 weeks on a moderately stocked reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eRED862\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich roll do I need?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFilter unit\u003c\/th\u003e\n\u003cth\u003eFleece roll needed\u003c\/th\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 250\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/red-sea-reefmat-fleece-mat-250\"\u003eReefMat 250 fleece roll\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 500\u003c\/td\u003e\n\u003ctd\u003eThis roll (RED862)\u003c\/td\u003e\n\u003ctd\u003e11.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 1200\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/red-sea-reefmat-fleece-mat-1200\"\u003eReefMat 1200 fleece roll\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e17 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe three widths aren't interchangeable — a roll cut for the 250 or 1200 won't seat correctly on a 500's dispensing shaft. Check your unit's model before ordering.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable only as a replacement for the Red Sea ReefMat 500. Not compatible with the ReefMat 250 or 1200, and not a fit for other brands' roller filters — Red Sea's dispensing mechanism and shaft width are specific to the ReefMat range.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003eKeep a spare roll on the shelf rather than waiting on the ReefBeat app's low-roll alert — a filtration gap while a delivery is in transit is the one situation the alert can't prevent. A \u003ca href=\"\/products\/red-sea-reefmat-nano-250-500-1200-power-supply\"\u003espare ReefMat power supply\u003c\/a\u003e is worth keeping on hand for the same reason.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eAs a consumable filtration media, this roll isn't covered under Red Sea's equipment warranty. Standard parcel delivery applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this fit my ReefMat 250 or 1200?\u003c\/h4\u003e\u003cp\u003eNo. Each ReefMat size uses a different fleece width — this roll is cut specifically for the ReefMat 500's 11.3 cm dispensing shaft.\u003c\/p\u003e\u003ch4\u003eHow long does one roll last?\u003c\/h4\u003e\u003cp\u003eRoughly 5–8 weeks on a moderately stocked reef system. Heavier bioloads or bare-bottom tanks use fleece faster; the ReefBeat app tracks your unit's actual usage and gives advance notice before the roll runs out.\u003c\/p\u003e\u003ch4\u003eCan I cut a wider roll down to fit a smaller unit, or a narrower one up?\u003c\/h4\u003e\u003cp\u003eNot recommended — the dispensing and take-up shafts are matched to each model's specific width, and a cut edge can fray and jam the mechanism.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774162194723,"sku":"RED862","price":35.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Red-Sea-ReefMat-Roll-500.jpg?v=1782112672"},{"product_id":"red-sea-reefmat-fleece-mat-1200","title":"Red Sea ReefMat Fleece Mat 1200","description":"\u003cp\u003e\u003cstrong\u003eGenuine replacement fleece for the ReefMat 1200.\u003c\/strong\u003e This is Red Sea's own replacement roll for the ReefMat 1200 automatic roller filter, the largest in the range — the correct width and material grade to load straight into the unit and keep continuous mechanical filtration running once the current roll is spent.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect fit, first time\u003c\/strong\u003e — sized specifically for the ReefMat 1200; the 250 and 500 use narrower fleece and won't seat correctly in a 1200.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-woven polyester fleece\u003c\/strong\u003e — the same fine mechanical media grade fitted as standard to a new ReefMat 1200.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35 m per roll\u003c\/strong\u003e — good for roughly 5–8 weeks on a moderately stocked reef system before the next change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrops straight onto the dispensing shaft\u003c\/strong\u003e — no cutting or trimming to width.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eRed Sea ReefMat 1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003ctd\u003e17 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll length\u003c\/th\u003e\n\u003ctd\u003e35 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eNon-woven polyester, approx. 50 g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical roll life\u003c\/th\u003e\n\u003ctd\u003eRoughly 5–8 weeks on a moderately stocked reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eRED863\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich roll do I need?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFilter unit\u003c\/th\u003e\n\u003cth\u003eFleece roll needed\u003c\/th\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 250\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/red-sea-reefmat-fleece-mat-250\"\u003eReefMat 250 fleece roll\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 500\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/red-sea-reefmat-fleece-mat-500\"\u003eReefMat 500 fleece roll\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e11.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReefMat 1200\u003c\/td\u003e\n\u003ctd\u003eThis roll (RED863)\u003c\/td\u003e\n\u003ctd\u003e17 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe three widths aren't interchangeable — a roll cut for the 250 or 500 won't seat correctly on a 1200's wider dispensing shaft. Check your unit's model before ordering. Note that the ReefMat 1200 is also the mechanical filtration stage fitted to Red Sea's Reefer MAX systems, so this roll suits both the stand-alone 1200 unit and a MAX package built around it.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable only as a replacement for the Red Sea ReefMat 1200. Not compatible with the ReefMat 250 or 500, and not a fit for other brands' roller filters — Red Sea's dispensing mechanism and shaft width are specific to the ReefMat range.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cp\u003eKeep a spare roll on the shelf rather than waiting on the ReefBeat app's low-roll alert — a filtration gap while a delivery is in transit is the one situation the alert can't prevent. A \u003ca href=\"\/products\/red-sea-reefmat-nano-250-500-1200-power-supply\"\u003espare ReefMat power supply\u003c\/a\u003e is worth keeping on hand for the same reason, especially on a large system where the ReefMat is the sole mechanical stage.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eAs a consumable filtration media, this roll isn't covered under Red Sea's equipment warranty. Standard parcel delivery applies.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this fit my ReefMat 250 or 500?\u003c\/h4\u003e\u003cp\u003eNo. Each ReefMat size uses a different fleece width — this roll is cut specifically for the ReefMat 1200's 17 cm dispensing shaft.\u003c\/p\u003e\u003ch4\u003eDoes this fit the ReefMat fitted to a Reefer MAX system?\u003c\/h4\u003e\u003cp\u003eYes — the Reefer MAX range uses the ReefMat 1200 as its filter roller, so this is the correct replacement roll for that setup as well as a stand-alone ReefMat 1200.\u003c\/p\u003e\u003ch4\u003eHow long does one roll last?\u003c\/h4\u003e\u003cp\u003eRoughly 5–8 weeks on a moderately stocked reef system. Heavier bioloads or bare-bottom tanks use fleece faster; the ReefBeat app tracks your unit's actual usage and gives advance notice before the roll runs out.\u003c\/p\u003e\u003ch4\u003eCan I cut a narrower roll down to fit the 1200?\u003c\/h4\u003e\u003cp\u003eNot recommended — the dispensing and take-up shafts are matched to each model's specific width, and a cut edge can fray and jam the mechanism.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774162227491,"sku":"RED863","price":48.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Red-Sea-ReefMat-Roll-1200.jpg?v=1782112692"},{"product_id":"red-sea-nano-reefmat-fleece-roll-2","title":"Red Sea Nano ReefMat Fleece Roll (2)","description":"\u003cp\u003e\u003cstrong\u003eGenuine Red Sea replacement fleece for the NanoMat roller filter, sold here under Red Sea's earlier \"Nano ReefMat\" name.\u003c\/strong\u003e Two rolls per pack, cut to the width and length the drive unit needs, so it advances cleanly instead of jamming.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Red Sea media\u003c\/strong\u003e — 50 gsm non-woven polyester, the spec fitted as standard in the NanoMat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect dimensions\u003c\/strong\u003e — 18 m by 5.5 cm per roll, matched to the NanoMat spool.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo rolls per pack\u003c\/strong\u003e — a spare on hand between changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll length\u003c\/th\u003e\n\u003ctd\u003e18 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003ctd\u003e5.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e50 gsm non-woven polyester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e2 rolls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e7290116397283\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWill it fit my system?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit\u003c\/th\u003e\n\u003cth\u003eFits?\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRed Sea NanoMat\u003c\/th\u003e\n\u003ctd\u003eYes, genuine replacement roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\"ReefMat Nano\" \/ \"Nano ReefMat\" (older name)\u003c\/th\u003e\n\u003ctd\u003eYes, same fleece and barcode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReefMat 250 \/ 500 \/ 1200\u003c\/th\u003e\n\u003ctd\u003eNo, different roll size and drive unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e NanoMat owners, including a NanoMat fitted in place of filter socks in MAX NANO G2 or REEFER systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the larger ReefMat units or any non-Red Sea roller filter.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cp\u003eTwo rolls of Red Sea fleece filter media.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e the NanoMat unit itself.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eIs \"Nano ReefMat\" the same as the NanoMat fleece roll?\u003c\/h4\u003e\n\u003cp\u003eYes, same barcode and dimensions as Red Sea's current NanoMat roll — \"Nano ReefMat\" is just the earlier name.\u003c\/p\u003e\n\u003ch4\u003eWill this fit my ReefMat 500 or 1200?\u003c\/h4\u003e\n\u003cp\u003eNo, those run a different fleece size on a different drive unit.\u003c\/p\u003e\n\u003ch4\u003eHow long does one roll last?\u003c\/h4\u003e\n\u003cp\u003eRed Sea doesn't publish a fixed figure — it varies with bioload and feeding, so a spare pack is worth having.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774163439907,"sku":"RED1002","price":41.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/RED1002.jpg?v=1772079036"},{"product_id":"api-water-softening-pillow","title":"API Water Softening Pillow","description":"\u003cp\u003e\u003cstrong\u003eSoftens hard tap water without buying a new filter.\u003c\/strong\u003e The API Water Softening Pillow is a regenerable ion-exchange pouch that drops into your filter's flow path and lowers general hardness (GH) by removing calcium and magnesium — treating up to 75 L before it needs recharging, then it can be recharged and reused several times.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLowers GH\u003c\/strong\u003e — removes calcium and magnesium ions from water passing through it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats up to 75 L per charge\u003c\/strong\u003e — drop it into the filter flow path and let it work continuously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegenerable\u003c\/strong\u003e — recharge in a salt solution and reuse rather than replace after one cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo dosing, no daily task\u003c\/strong\u003e — it works passively as water flows past it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne pouch per pack\u003c\/strong\u003e — sized for a single filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAPI (Mars Fishcare)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eRegenerable ion-exchange water softening pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e1 pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTreats per charge\u003c\/th\u003e\n\u003ctd\u003eUp to 75 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive life before recharge\u003c\/th\u003e\n\u003ctd\u003eApproximately 48 hours in continuous flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eCost per litre\u003c\/h3\u003e\n\u003cp\u003eThe cost-per-litre tile under the photo is calculated live from the current price against the 75 L this pouch treats on its first charge — so it always matches what you'd actually pay today. That figure understates the real value, though: unlike a one-shot treatment, the pouch isn't spent after that first 75 L. API rates it for several recharge cycles in a fresh salt solution, and each recharge treats another 75 L at the cost of a few cents of aquarium salt — so the effective cost per litre keeps falling the more cycles you get out of one pouch. Recharging, not replacing, is how you beat the first-charge figure shown.\u003c\/p\u003e\n\n\u003ch3\u003eHow to recharge it\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRinse the pouch under tap water.\u003c\/li\u003e\n\u003cli\u003eDissolve 3 tablespoons of aquarium salt in 7 oz (about 200 mL) of tap water.\u003c\/li\u003e\n\u003cli\u003eSubmerge the pouch in the salt solution for 2 hours.\u003c\/li\u003e\n\u003cli\u003eReturn it to the filter without rinsing off the salt solution.\u003c\/li\u003e\n\u003cli\u003eWhen not in use, store the pouch in the recharging solution — don't let it dry out.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eAPI rates the pillow for multiple recharge cycles before it stops performing effectively; treat repeated slow performance after a fresh recharge as the sign it's time to replace it.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater tanks kept for soft-water species — tetras, discus, many catfish — where tap water GH runs too high\u003c\/li\u003e\n\u003cli\u003eReducing scale-forming minerals on glass and equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMarine and reef tanks — removing calcium and magnesium is the opposite of what a reef system needs, since corals and inverts consume both\u003c\/li\u003e\n\u003cli\u003eTanks that need hardness raised, not lowered — this pouch only works in one direction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eAs a consumable filter media, no manufacturer warranty period applies. That doesn't affect your rights under the Australian Consumer Law: if the product is faulty, unsafe or not as described, you're entitled to a remedy. Ships as standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-gh-kh-hardness-test-kit\"\u003eAPI GH\/KH Hardness Test Kit\u003c\/a\u003e — to confirm your starting hardness and track the drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-stress-coat\"\u003eAPI Stress Coat\u003c\/a\u003e — for conditioning the tap water you're softening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow do I know when the pillow needs recharging?\u003c\/h4\u003e\n\u003cp\u003eAPI states the active life is around 48 hours in continuous filter flow. Test GH periodically with a GH kit — a reading creeping back up is the practical sign it's time to recharge.\u003c\/p\u003e\n\u003ch4\u003eCan I use this in a saltwater or reef tank?\u003c\/h4\u003e\n\u003cp\u003eNo. It's built to strip calcium and magnesium out of water, which is the opposite of what a reef tank needs from those minerals.\u003c\/p\u003e\n\u003ch4\u003eDoes it work instantly?\u003c\/h4\u003e\n\u003cp\u003eNo — it works as water passes through it in the filter flow path, so hardness drops gradually rather than all at once.\u003c\/p\u003e\n\u003ch4\u003eHow many times can I recharge it?\u003c\/h4\u003e\n\u003cp\u003eThe manufacturer's own US packaging states it can be recharged and reused multiple times before replacement; the exact cycle count isn't published on API's Australian information, so budget for several cycles rather than a guaranteed exact number.\u003c\/p\u003e","brand":"API","offers":[{"title":"Default Title","offer_id":54774198567203,"sku":null,"price":25.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/HC7_2.png?v=1772082195"},{"product_id":"bioscape-bioscape-carbon-extraction-pad-25-x-45cm","title":"Bioscape Carbon Extraction Pad 25 x 45cm","description":"\u003cp\u003e\u003cstrong\u003eOne sheet, cut to fit whatever filter you own.\u003c\/strong\u003e The Bioscape Carbon Extraction Pad is a 25 × 45 cm carbon-impregnated poly-fibre sheet you trim to size, for power filters, trickle filters, wet\/dry filters, powerheads, canister filters and pond filters alike.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne size fits any filter\u003c\/strong\u003e — cut a strip or panel to match your filter's media chamber instead of hunting for a brand-specific cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 × 45 cm sheet\u003c\/strong\u003e — enough for several cuts on most household filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves tannins, odour and discolouration\u003c\/strong\u003e — activated carbon adsorbs dissolved organics, chlorine, phenols and residual medication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and marine safe\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eBIS21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e25 × 45 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003ctd\u003eActivated-carbon-impregnated poly-fibre pad, cut-to-fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003ePower filters, trickle filters, wet\/dry filters, powerheads, canister filters, pond filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\u003cp\u003eBecause it's a cut-to-size sheet rather than a shaped cartridge, it fits almost any filter with an open media compartment — trim it to the chamber size with scissors. It won't help on a filter that only accepts a sealed, brand-specific cartridge with no room to fit trimmed media.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eAs a general guide, replace the cut section roughly every 4 weeks of continuous use — activated carbon has a limited adsorption life and stops improving water clarity once exhausted, though it's not harmful left in place. Rinse a fresh-cut piece before fitting to clear loose carbon dust.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e any filter with an open media tray or bag — freshwater or marine, including ponds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e filters that only take a sealed, pre-shaped cartridge.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your consumer guarantee rights under Australian Consumer Law if faulty on arrival. Ships as a small parcel.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow do I size a piece for my filter?\u003c\/h4\u003e\u003cp\u003eLay your old cartridge or media chamber on the sheet and cut around it with scissors, leaving a small margin so it sits snugly.\u003c\/p\u003e\u003ch4\u003eHow long does one sheet last?\u003c\/h4\u003e\u003cp\u003eDepends on your filter's chamber size — most household filters get several cuts from one sheet before it's used up.\u003c\/p\u003e\u003ch4\u003eIs it safe for shrimp and plants?\u003c\/h4\u003e\u003cp\u003eYes, plain activated carbon media doesn't affect invertebrates or live plants.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":54774334587171,"sku":"BIS21","price":14.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS21_2.jpg?v=1782868965"},{"product_id":"bioscape-bioscape-phosphate-extraction-pad-25-x-45cm","title":"Bioscape Phosphate Extraction Pad 25 x 45cm","description":"\u003cp\u003e\u003cstrong\u003eA cut-to-fit pad that strips phosphate from your filter's water flow.\u003c\/strong\u003e Bioscape's Phosphate Extraction Pad is a 25 x 45 cm poly-fibre sheet impregnated with a phosphate-adsorbing resin, sized to be trimmed to fit power filters, trickle filters, wet\/dry filters, powerheads, canister filters and pond filters.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut-to-fit sheet\u003c\/strong\u003e — trim it to the exact shape of your filter's media tray rather than being limited to a fixed cartridge size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets phosphate\u003c\/strong\u003e — adsorbs the phosphate that builds up from decaying food and waste, the nutrient behind most nuisance algae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and marine safe\u003c\/strong\u003e — the same pad works across both water types.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSheet size\u003c\/th\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e25 x 45 cm\u003c\/td\u003e\n\u003ctd\u003ePoly-fibre, phosphate-adsorbing resin\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\u003cp\u003eBecause it's a full sheet rather than a pre-cut cartridge, it fits almost any filter that takes a media pad or sheet — power filters, trickle filters, wet\/dry sumps, powerhead pre-filters, canister filters and pond filters. Trim it to the shape of your existing media tray or cartridge frame.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for freshwater and marine aquariums running elevated or tested phosphate levels. Not a substitute for regular water changes and feeding control — like any phosphate media, it treats a symptom rather than the underlying nutrient load.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eBioscape doesn't publish a fixed replacement interval for this pad. Test your phosphate level periodically and replace the section in use once readings start climbing again — heavily stocked or overfed tanks will exhaust it faster than lightly stocked ones.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered against manufacturing defects under Bioscape's warranty, in addition to your rights under Australian Consumer Law.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I cut it into multiple pieces and use them over time?\u003c\/h4\u003e\u003cp\u003eYes — that's the point of a sheet over a pre-cut cartridge. Cut off what you need now and store the rest in a sealed bag for later.\u003c\/p\u003e\u003ch4\u003eHow do I know when to replace the pad?\u003c\/h4\u003e\u003cp\u003eTest your phosphate level. Once it starts climbing again, the section in use has adsorbed as much as it can and it's time to cut a fresh piece.\u003c\/p\u003e\u003ch4\u003eIs it reef safe?\u003c\/h4\u003e\u003cp\u003eBioscape markets this pad for both freshwater and marine use, including reef systems dealing with elevated phosphate.\u003c\/p\u003e\u003ch4\u003eDoes it work in a pond filter?\u003c\/h4\u003e\u003cp\u003eYes — Bioscape lists pond filters alongside aquarium canister, power, trickle and wet\/dry filters as suited to this pad.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":54774334619939,"sku":"BIS22","price":14.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS22_27719140-b0e3-4063-9dd9-04f88b341a8d.jpg?v=1782868965"},{"product_id":"bioscape-bioscape-nitrate-extraction-pad-25-x-45cm","title":"Bioscape Nitrate Extraction Pad 25 x 45cm","description":"\u003cp\u003e\u003cstrong\u003eA cut-to-fit filter pad that pulls nitrate out of the water as it flows through your filter.\u003c\/strong\u003e The Bioscape Nitrate Extraction Pad is a 25 x 45 cm sheet of poly-fibre impregnated with nitrate-adsorbing resin, sized to trim down to whatever filter box, canister tray or power filter cartridge you're running.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut to fit\u003c\/strong\u003e — one large sheet trims down with scissors to match your specific filter, rather than being locked to one cartridge shape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets nitrate specifically\u003c\/strong\u003e — the resin adsorbs nitrate rather than acting as a general-purpose mechanical pad.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh or saltwater\u003c\/strong\u003e — works the same way in either water type.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSheet size\u003c\/th\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e25 x 45 cm (approx. 254 x 457 mm)\u003c\/td\u003e\n\u003ctd\u003ePoly-fibre, resin-impregnated\u003c\/td\u003e\n\u003ctd\u003eNitrate\u003c\/td\u003e\n\u003ctd\u003eFresh or saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\u003cp\u003eThe full sheet fits power filters, trickle filters, wet\/dry filters, powerheads, canister filters and pond filters — cut a piece to the size of your existing filter pad or media tray rather than expecting a drop-in fit straight out of the pack. One sheet typically yields several cut-to-size pieces depending on your filter's dimensions.\u003c\/p\u003e\u003ch3\u003eWhich Bioscape extraction pad do I need?\u003c\/h3\u003e\u003cp\u003eBioscape's Tropic extraction pad range targets different parameters from the same 25 x 45 cm sheet format: carbon pads pull out dissolved organics, discolouration and odour; ammonia pads target ammonia directly, useful during cycling or after a stocking spike; this nitrate pad targets the nitrate that builds up between water changes. Running more than one type means using separate compartments or trays rather than layering them into one.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for freshwater and marine aquariums carrying a nitrate load from feeding, stocking or infrequent water changes. Not the right pad if what you're chasing is ammonia, discolouration or odour — those call for the ammonia or carbon versions instead.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse the cut pad in tank or dechlorinated water before use to clear manufacturing dust. Bioscape doesn't publish a fixed replacement interval for this pad. As a general guide for resin-based nitrate media, plan on replacing a cut section every four to eight weeks, and confirm against your own nitrate test rather than the calendar alone.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered against manufacturing defects under Bioscape's warranty, in addition to your rights under Australian Consumer Law.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow do I cut it to fit my filter?\u003c\/h4\u003e\u003cp\u003eLay your existing filter pad or media tray over the sheet as a template and trim around it with scissors — the pad is designed to be cut down rather than used as one fixed shape.\u003c\/p\u003e\u003ch4\u003eHow often do I need to replace it?\u003c\/h4\u003e\u003cp\u003eNo fixed interval is published for the pad itself. As a general guide for resin-based nitrate media, four to eight weeks is a reasonable starting point — test your nitrate to confirm rather than relying on a fixed schedule.\u003c\/p\u003e\u003ch4\u003eWill this replace my water changes?\u003c\/h4\u003e\u003cp\u003eNo. It holds nitrate down between changes; it doesn't remove the reason nitrate is rising in the first place.\u003c\/p\u003e\u003ch4\u003eCan I use it in a reef tank?\u003c\/h4\u003e\u003cp\u003eBioscape markets it as suitable for fresh or saltwater use. Introduce any new chemical media to a reef system gradually and keep testing.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":54774334652707,"sku":"BIS23","price":14.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS23_071729e8-f989-429d-a578-ade8d617359c.jpg?v=1782868965"},{"product_id":"bioscape-bioscape-polyfiber-filter-pad-25-x-45cm","title":"Bioscape Polyfiber Filter Pad 25 x 45cm","description":"\u003cp\u003e\u003cstrong\u003eA cut-to-fit sheet of mechanical media that polishes water clear.\u003c\/strong\u003e The Bioscape Polyfiber Filter Pad is a 25 × 45 cm sheet of fine polyester fibre you trim to fit almost any filter tray — hang-on, canister, sump, trickle or pond — to trap fine suspended particles the coarser stages miss.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut to any shape\u003c\/strong\u003e — trim it to fit power filters, trickle and wet\/dry filters, powerhead prefilters, canister baskets, sump trays and pond filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine mechanical polish\u003c\/strong\u003e — the tight fibre weave catches small free-floating particles that coarser foam and media let through, for genuinely clear water rather than just cloudy-to-hazy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and marine safe\u003c\/strong\u003e — inert polyfiber that doesn't affect pH, hardness or salinity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge sheet, low waste\u003c\/strong\u003e — one 25 × 45 cm sheet cuts multiple pad refills for most hang-on and internal filters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eFiltration stage\u003c\/th\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e25 x 45 cm\u003c\/td\u003e\n\u003ctd\u003ePolyfiber (polyester mechanical media)\u003c\/td\u003e\n\u003ctd\u003eFine mechanical \/ polishing\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\u003cp\u003eBecause it's supplied as an uncut sheet rather than a shaped cartridge, it fits any filter that takes a mechanical media pad — hang-on power filters, internal powerhead prefilters, canister filter baskets, wet\/dry and trickle towers, and pond filter boxes. Trim it slightly oversized so it seats firmly against the tray edges rather than leaving gaps water can bypass through.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable as the final mechanical polishing stage in freshwater and marine filters of any type. Not intended as the sole filtration stage on a heavily stocked tank — run it after coarse sponge or floss media, since a clean polyfiber pad clogs quickly if it's catching large debris as well as fine particulate.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eBioscape doesn't publish a fixed replacement interval for this pad — in practice, rinse it in tank water during routine filter maintenance and replace the trimmed piece once it's visibly grey, compacted or slow to pass water, rather than to a set schedule. Because it's supplied as a full sheet, a single purchase covers several replacement cuts.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered against manufacturing defects under Bioscape's warranty, in addition to your rights under Australian Consumer Law.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I rinse and reuse it, or does it need replacing each time?\u003c\/h4\u003e\u003cp\u003eYou can rinse it in tank water a few times while it still passes water freely. Once it's compacted, discoloured grey-brown or restricting flow, cut a fresh piece from the sheet rather than continuing to rinse it.\u003c\/p\u003e\u003ch4\u003eWhere in the filter should it go?\u003c\/h4\u003e\u003cp\u003eLast in the flow path, after any coarse sponge or floss stage. It's a polishing media — putting it first means it clogs on debris a coarser pad should be catching.\u003c\/p\u003e\u003ch4\u003eIs one sheet enough for more than one filter?\u003c\/h4\u003e\u003cp\u003eYes. At 25 x 45 cm it's larger than most single filter trays, so most buyers cut several replacement pads from one sheet over time.\u003c\/p\u003e\u003ch4\u003eWill it work in a marine or reef tank?\u003c\/h4\u003e\u003cp\u003eYes — it's an inert polyester fibre that's safe for both freshwater and marine setups and won't affect salinity or water chemistry.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":54774334685475,"sku":"BIS24","price":10.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS24_6.jpg?v=1782868966"},{"product_id":"seachem-phosbond-bag","title":"Seachem PhosBond (Bag)","description":"\u003cp\u003e\u003cstrong\u003eThe same phosphate and silicate remover as loose PhosBond, pre-packed in its own media bag so you can drop it straight into the filter.\u003c\/strong\u003e Seachem PhosBond (Bag) combines ferric oxide coated aluminium oxide to pull both phosphate and silicate out of fresh and saltwater in one pass, supplied ready to use without needing a separate mesh bag or reactor.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves phosphate and silicate together\u003c\/strong\u003e — the same dual-action media as loose PhosBond.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-bagged\u003c\/strong\u003e — no need to buy or fill a separate media bag before use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and saltwater safe\u003c\/strong\u003e — one product for either system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — can be dried and returned to service until exhausted, and doesn't leach phosphate or silicate back out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo sizes\u003c\/strong\u003e — 250 g and 500 g, sold by weight rather than volume.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003ePhosBond, pre-packed in a media bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eFerric oxide coated aluminium oxide (GFO + aluminium oxide blend)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003ePhosphate and silicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes\u003c\/th\u003e\n\u003ctd\u003e250 g, 500 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse in\u003c\/th\u003e\n\u003ctd\u003eCanister filter, media chamber, box filter or high-flow area of a trickle filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReusable\u003c\/th\u003e\n\u003ctd\u003eYes — dry and return to service until exhausted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eSeachem publishes PhosBond's dose rate by volume (60 mL per 200 L saltwater, or 60 mL per 400 L freshwater) rather than by weight, and we haven't been able to confirm an exact gram-to-millilitre conversion directly from Seachem for this pre-bagged pack. As a guide, the 500 g bag is roughly double the media of the 250 g bag — for a precise dose on a specific tank size, our loose Seachem PhosBond sizes (measured in mL) let you dose against Seachem's published volume-based rate directly, or ask our team and we'll help you match the bagged pack to your system.\u003c\/p\u003e\u003ch3\u003eSetup and use\u003c\/h3\u003e\u003cp\u003ePlace the bag directly into a canister filter, media chamber, box filter, or the high-flow section of a trickle filter — no need to decant it into your own media bag first. Test phosphate after 4 days in place; if it hasn't dropped to around 0.02 mg\/L, leave it running and test again in a few more days. Once levels are low and stable, the media can stay in place until they start climbing again.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e reef tanks and FOWLR systems fighting nuisance algae, freshwater tanks with excess phosphate, anyone who'd rather drop a ready-made bag straight in than fill their own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e precise dosing where you need to match Seachem's published mL-based rate exactly — for that, the loose PhosBond sizes give you a direct volume to work from.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eThe media can be removed, rinsed and dried between uses and returned to service until it's fully exhausted — it doesn't release what it's captured back into the water. Replace it once it stops bringing phosphate back down after a few days in place.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Seachem's standard quality guarantee at the time of sale, in addition to your rights under Australian Consumer Law. Ships as a standard parcel.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWhat's the difference between this and the loose PhosBond?\u003c\/h4\u003e\u003cp\u003eSame media, same job — this pack is already inside a media bag and sold by weight (250 g or 500 g) rather than volume, so there's nothing extra to buy or fill before using it.\u003c\/p\u003e\u003ch4\u003eHow do I know how much to use for my tank size?\u003c\/h4\u003e\u003cp\u003eSeachem's published dose rate is by volume, not weight, so for a precise match to a specific tank size the loose mL-sized PhosBond is easier to dose exactly. For this bagged pack, treat 500 g as roughly double the 250 g bag and check with us if you want help sizing it to your system.\u003c\/p\u003e\u003ch4\u003eCan I use it in a freshwater tank?\u003c\/h4\u003e\u003cp\u003eYes — PhosBond works in both freshwater and saltwater; the underlying dose rate is simply lower for freshwater than saltwater.\u003c\/p\u003e\u003ch4\u003eDo I need my own media bag as well?\u003c\/h4\u003e\u003cp\u003eNo — this pack already comes bagged and ready to place into your filter.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"250g","offer_id":55335432290595,"sku":"BA8880","price":20.0,"currency_code":"AUD","in_stock":true},{"title":"500g","offer_id":55242229317923,"sku":"BA8879","price":44.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/1263-phosbond-4-l_e6b9d613-e4a5-4af3-b269-4940ae83d77e.png?v=1782710512"},{"product_id":"seachem-cuprisorb-100ml-50g-bag","title":"Seachem CupriSorb 100ml 50g Bag","description":"\u003cp\u003e\u003cstrong\u003eRapidly clears copper and heavy metals from aquarium water.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem CupriSorb is a 100 mL bag of copper-specific chelating resin designed to strip copper and other heavy metals out of freshwater and saltwater aquariums. It works faster than carbon and, unlike simple cation exchange resins, stays effective in saltwater as well as freshwater, making it a go-to option for emergency copper removal after medicating with a copper-based treatment or dealing with metal contamination from tank hardware.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper-specific chelating resin\u003c\/strong\u003e — extracts all types of copper, including chelated copper, from the water column.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves multiple heavy metals\u003c\/strong\u003e — also draws out nickel, zinc, cobalt, cadmium and manganese.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster than carbon\u003c\/strong\u003e — removes copper more rapidly and efficiently than activated carbon, useful for emergency copper removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks in freshwater and saltwater\u003c\/strong\u003e — as a true chelating resin it remains effective in marine systems, unlike ordinary cation exchange resins that only work in freshwater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour-change exhaustion indicator\u003c\/strong\u003e — beads turn a pronounced deep blue-black when spent, so you can see at a glance when it needs replacing or regenerating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegenerable\u003c\/strong\u003e — can be regenerated repeatedly with a muriatic acid soak rather than discarded after one use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWill not leach back into the tank\u003c\/strong\u003e — does not release anything into the water, so it is compatible with all aquarium species while in use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh capacity\u003c\/strong\u003e — a 250 mL dose treats 600 L (150 US gallons) and removes up to 12 ppm (mg\/L) of copper.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eCupriSorb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eCopper-specific chelating adsorbent resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e100 mL \/ 50 g bag (SKU AA3653)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemoves\u003c\/td\u003e\n\u003ctd\u003eCopper (all forms, including chelated copper), nickel, zinc, cobalt, cadmium, manganese\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegenerable\u003c\/td\u003e\n\u003ctd\u003eYes, with a muriatic acid soak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eOne 100 mL pre-bagged packet of CupriSorb treats up to 60 US gallons (approximately 227 litres). For loose media, the standard rate is 250 mL per 600 L (150 US gallons), removing up to 12 ppm (mg\/L) of copper. Place CupriSorb in a filter media bag (such as Seachem's The Bag) positioned to maximise water flow through it, for example in a canister filter, chemical filtration module, box filter, or a high-flow area of a trickle filter.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAquarium volume\u003c\/th\u003e\n\u003cth\u003eCupriSorb dose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L (1 US gal)\u003c\/td\u003e\n\u003ctd\u003e1.7 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 L (10 US gal)\u003c\/td\u003e\n\u003ctd\u003e16.7 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 L (20 US gal)\u003c\/td\u003e\n\u003ctd\u003e33 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200 L (60 US gal)\u003c\/td\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e600 L (150 US gal)\u003c\/td\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSuitable for \/ not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for freshwater and saltwater aquariums, including reef tanks and invertebrate or shrimp tanks, as CupriSorb does not release anything back into the water.\u003c\/li\u003e\n\u003cli\u003eNot intended for permanent, continuous use in a filter — pulling out too much dissolved metal over time can deplete trace elements that fish, corals and invertebrates need, leading to tissue degradation, poor colouration and improper growth. Use it to bring elevated copper or heavy metal levels down, then remove or monitor it rather than leaving it running indefinitely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWatch the beads: a pronounced colour change to deep blue-black means the media is exhausted.\u003c\/li\u003e\n\u003cli\u003eKeep CupriSorb running for at least two weeks after a copper test reports a nil reading, to catch any further metal leaching from substrate.\u003c\/li\u003e\n\u003cli\u003eTo regenerate, soak the resin in a non-metal container in a mix of 2 cups of water to ½ cup of muriatic acid (available from pool supply stores), for 1 hour, then rinse; repeat as needed until the original colour is restored. Always follow the warnings printed on the acid container and carry out the soak outdoors, away from children.\u003c\/li\u003e\n\u003cli\u003eAfter the acid soak, rinse well, add sodium bicarbonate until foaming stops, then rinse again before returning CupriSorb to use.\u003c\/li\u003e\n\u003cli\u003eIf the original colour cannot be restored after several acid washes, the spent resin can instead be regenerated using Seachem HyperSorb or Purigen, or simply discarded.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty, support and Australian notes\u003c\/h3\u003e\n\u003cp\u003eAll statutory consumer guarantees under the Australian Consumer Law apply to this product in addition to any rights arising from your purchase.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat does Seachem CupriSorb remove?\u003c\/h4\u003e\n\u003cp\u003eIt removes all forms of copper, including chelated copper, plus nickel, zinc, cobalt, cadmium and manganese. Seachem has no data confirming effectiveness against other heavy metals.\u003c\/p\u003e\n\u003ch4\u003eHow much water will one 100 mL bag treat?\u003c\/h4\u003e\n\u003cp\u003eOne 100 mL pre-bagged packet treats up to 60 US gallons (approximately 227 litres).\u003c\/p\u003e\n\u003ch4\u003eIs Seachem CupriSorb safe with corals and invertebrates?\u003c\/h4\u003e\n\u003cp\u003eYes. It does not release anything into the water, so it is compatible with all aquarium species. Avoid leaving it running permanently, as removing too much trace metal can affect coral colouration and invertebrate health.\u003c\/p\u003e\n\u003ch4\u003eHow do I know when CupriSorb is exhausted?\u003c\/h4\u003e\n\u003cp\u003eThe beads develop a pronounced deep blue-black colour when spent. Keep it in use for at least two weeks after a copper test shows a nil reading, since substrate can continue to leach copper.\u003c\/p\u003e\n\u003ch4\u003eCan CupriSorb be reused?\u003c\/h4\u003e\n\u003cp\u003eYes, it can be regenerated repeatedly using a muriatic acid soak followed by a sodium bicarbonate rinse. If the colour will not restore after several washes, it can be regenerated as HyperSorb or Purigen, or discarded.\u003c\/p\u003e\n\u003ch4\u003eDoes it work in both freshwater and saltwater tanks?\u003c\/h4\u003e\n\u003cp\u003eYes. Because CupriSorb is a chelating resin rather than a cation exchange resin, it remains effective in saltwater as well as freshwater.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":55242238034211,"sku":"AA3653","price":24.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0205-cuprisorb-100-ml_cd7abf2d-073b-4b27-bf04-bd3069a105ab.png?v=1782710513"},{"product_id":"orca-50x50cm-black-foam","title":"Orca 50x50cm Black Foam","description":"\u003cp\u003e\u003cstrong\u003eOne sheet cuts to fit almost any filter, sump or DIY build.\u003c\/strong\u003e This Orca black filter foam is a 50 x 50 cm sheet available in 4 cm or 6 cm thickness, sized to trim into canister baskets, sump baffles, hang-on-back filters and sponge filter housings. It gives mechanical and biological filtration in a single material, and because it's sold as a full sheet rather than a shaped cartridge, one sheet typically replaces several branded pre-cut inserts over the life of a filter.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 x 50 cm sheet\u003c\/strong\u003e — cut to the exact shape your filter needs, with offcuts kept for the next change.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo thicknesses\u003c\/strong\u003e — 4 cm for lighter mechanical duty, 6 cm where you want more media volume and more surface for bacteria to colonise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical and biological filtration together\u003c\/strong\u003e — traps floating debris while giving bacteria somewhere to live.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits most filter types\u003c\/strong\u003e — canister baskets, sumps, hang-on-back filters, internal filters and DIY sponge filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter value than pre-cut cartridges\u003c\/strong\u003e — one sheet can replace several branded inserts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003e4 cm sheet\u003c\/th\u003e\n\u003cth\u003e6 cm sheet\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAA3623\u003c\/td\u003e\n\u003ctd\u003eAA3622\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarcode\u003c\/td\u003e\n\u003ctd\u003e9325466005385\u003c\/td\u003e\n\u003ctd\u003e9325466005392\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSheet size\u003c\/td\u003e\n\u003ctd\u003e50 x 50 cm\u003c\/td\u003e\n\u003ctd\u003e50 x 50 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e4 cm\u003c\/td\u003e\n\u003ctd\u003e6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eFresh and marine\u003c\/td\u003e\n\u003ctd\u003eFresh and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhich thickness do I need?\u003c\/h3\u003e\n\u003cp\u003eThe 4 cm sheet suits smaller canister baskets and hang-on-back filters where space is tight and mechanical duty is light. The 6 cm sheet suits larger sumps and heavier bioloads, and gives enough depth to cut and replace half the sheet at a time so the filter never loses its whole bacterial colony in one change.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for canister filters, sumps, hang-on-back filters, internal filters and home-built sponge filters, in both freshwater and marine tanks.\u003c\/p\u003e\n\u003cp\u003eNot suitable as a rigid pre-shaped cartridge replacement — this foam has no frame, so filters that rely on a moulded cartridge to seal against bypass may need the sheet packed firmly rather than dropped in loose. In a heavily stocked marine system it's best paired with a dedicated biomedia rather than used as the only biological stage.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRinse in water taken from the tank during a water change, not tap water — tap water's chlorine or chloramine will kill the bacteria living in the foam. Replace gradually: cut and swap a portion of the sheet at a time rather than the whole thing, so the filter keeps most of its bacterial colony through each change.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-bioscape-carbon-extraction-pad-25-x-45cm\"\u003eBioscape Carbon Extraction Pad 25 x 45cm\u003c\/a\u003e — add a chemical filtration stage alongside the mechanical and biological work this foam does.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-prime\"\u003eSeachem Prime\u003c\/a\u003e — dechlorinate top-up water before it reaches newly rinsed foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-algae-scraper\"\u003eSeachem Algae Scraper\u003c\/a\u003e — keep the glass clear between the longer intervals a full sheet allows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eThis is a cut-to-size filtration consumable and isn't covered by a separate manufacturer warranty; your rights under Australian Consumer Law apply regardless. It ships as a standard parcel item.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eCan I cut it to any shape?\u003c\/h4\u003e\n\u003cp\u003eYes. It's sold as a flat sheet specifically so you can trim it to fit your filter basket, sump baffle or DIY build.\u003c\/p\u003e\n\u003ch4\u003eWill it affect my water chemistry?\u003c\/h4\u003e\n\u003cp\u003eNo. It's an inert filtration foam and won't change pH or hardness.\u003c\/p\u003e\n\u003ch4\u003eHow do I know when to replace it?\u003c\/h4\u003e\n\u003cp\u003eWhen it stays clogged and slows flow even after a rinse in tank water, or when it's visibly compressed and torn.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a saltwater tank?\u003c\/h4\u003e\n\u003cp\u003eYes, it's suitable for both freshwater and marine systems.\u003c\/p\u003e\n\u003ch4\u003eShould I buy the 4 cm or 6 cm sheet?\u003c\/h4\u003e\n\u003cp\u003eChoose 4 cm for smaller filters with light mechanical duty, and 6 cm for larger sumps or heavier bioloads where you want more media depth.\u003c\/p\u003e","brand":"Orca","offers":[{"title":"4cm","offer_id":55242240491811,"sku":"AA3623","price":49.95,"currency_code":"AUD","in_stock":false},{"title":"6cm","offer_id":55335351910691,"sku":"AA3622","price":49.95,"currency_code":"AUD","in_stock":false}]},{"product_id":"aqua-medic-antiphos-fe","title":"Aqua Medic Antiphos Fe","description":"\u003cp\u003e\u003cstrong\u003eIron-based GFO that strips phosphate before algae gets to use it.\u003c\/strong\u003e Aqua Medic Antiphos Fe is an iron hydroxide filter media that binds phosphate and silicate from aquarium water, starving the nuisance algae that feed on them. It is aluminium-free and safe for fish, invertebrates and plants when run correctly in a reactor or filter bag.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinds phosphate and silicate\u003c\/strong\u003e — removes the two nutrients that drive nuisance and diatom algae growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium-free iron hydroxide\u003c\/strong\u003e — will not leach aluminium into the water column the way some older GFO media can.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh or marine\u003c\/strong\u003e — suitable for both, including reef systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-lasting capacity\u003c\/strong\u003e — roughly 10 g of phosphate bound per kilogram of media before it is exhausted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo pack sizes\u003c\/strong\u003e — 500 g and 1000 g, to match reactor size and system load.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 g\u003c\/td\u003e\n\u003ctd\u003eAA2595\u003c\/td\u003e\n\u003ctd\u003e14025901143423\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 g\u003c\/td\u003e\n\u003ctd\u003eAA2771\u003c\/td\u003e\n\u003ctd\u003e4025901143430\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eHow much tank does a pack cover?\u003c\/h3\u003e\u003cp\u003eAqua Medic rates the 500 g pack as sufficient for a 300 L aquarium under normal bioload for approximately three to six months, depending on stocking and feeding. The 1000 g pack carries twice the media by weight; treat that as a larger-system or longer-interval option rather than assuming an exact doubled figure, since binding capacity is also affected by flow rate and how saturated the phosphate load already is.\u003c\/p\u003e\u003ch3\u003eSetting it up\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRinse the media before use to clear dust that would otherwise cloud the tank.\u003c\/li\u003e\n\u003cli\u003eRun it in a fluidised media reactor or a mesh filter bag, in good flow — GFO works by contact, so a reactor that keeps the media gently tumbling outperforms a bag sitting still in a sump corner.\u003c\/li\u003e\n\u003cli\u003eReplace before it is fully exhausted rather than waiting for phosphate to rebound — test your phosphate level and swap the media once the reading plateaus rather than climbs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for freshwater and marine systems, including reef tanks, where phosphate or silicate is driving algae. Not a fix for an overstocked or overfed tank on its own — it treats the symptom; feeding and stocking are the underlying lever.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eTest phosphate regularly rather than running to a fixed calendar date — bioload varies run to run. Sudden, heavy dosing of fresh GFO into an already low-phosphate reef tank can drop phosphate too fast for corals used to a higher baseline; introduce a fresh batch gradually if your tank already reads low.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by the manufacturer's standard shelf-life guarantee, in addition to your rights under Australian Consumer Law. Ships standard parcel from North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this affect my corals?\u003c\/h4\u003e\u003cp\u003eUsed as directed it is safe for reef systems, but drop phosphate gradually if your tank already reads low — corals adapted to a slightly higher baseline can react to a sudden swing.\u003c\/p\u003e\u003ch4\u003eReactor or filter bag — which is better?\u003c\/h4\u003e\u003cp\u003eA reactor that keeps the media tumbling gets more even contact and typically better performance per gram; a filter bag is a reasonable lower-cost option for smaller systems.\u003c\/p\u003e\u003ch4\u003eHow do I know when to replace it?\u003c\/h4\u003e\u003cp\u003eTest phosphate on a regular schedule. Once the reading stops falling and plateaus, the media is exhausted even if it still looks physically intact.\u003c\/p\u003e\u003ch4\u003eDoes it work in freshwater?\u003c\/h4\u003e\u003cp\u003eYes — it is not reef-specific. Freshwater planted and community tanks fighting phosphate-driven algae can run it the same way.\u003c\/p\u003e","brand":"Aqua Medic","offers":[{"title":"500g","offer_id":55242265985315,"sku":"AA2595","price":34.95,"currency_code":"AUD","in_stock":false},{"title":"1000g","offer_id":55335403028771,"sku":"AA2771","price":67.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/aqua-medic-antiphos-fe-500g-3000700-1600.jpg?v=1781836594"},{"product_id":"api-phos-zorb-treats-210l","title":"API Phos Zorb - treats 210L","description":"\u003cp\u003e\u003cstrong\u003eOne pouch strips phosphate and silicate before algae can use them.\u003c\/strong\u003e API Phos-Zorb is a synthetic adsorption filter media that removes phosphate and silicate from freshwater and saltwater aquariums. It ships as a single 5.25 oz (approximately 149 g) mesh pouch rated to treat up to 55 US gallons (approximately 208 L).\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves phosphate and silicate\u003c\/strong\u003e — the two nutrients that build up from feeding and waste and fuel nuisance algae once they accumulate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats up to 208 L per pouch\u003c\/strong\u003e — at the current price that works out to $0.15 per litre of treated water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-in mesh pouch\u003c\/strong\u003e — no dosing or mixing. It sits in the filter's flow path and adsorbs passively.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse to activate\u003c\/strong\u003e — a few minutes under tap water clears dust and starts the media working; it will feel warm as it does, which is normal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and saltwater\u003c\/strong\u003e — one pouch formulation works in either water type.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eChemical filter media — phosphate and silicate remover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNet weight\u003c\/th\u003e\n\u003ctd\u003e5.25 oz (approx. 149 g) mesh pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTreats\u003c\/th\u003e\n\u003ctd\u003eUp to 55 US gallons (approx. 208 L) per pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003ePhosphate and silicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eSynthetic adsorption media — exact composition not disclosed by API\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePreparation\u003c\/th\u003e\n\u003ctd\u003eRinse under tap water for several minutes before use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReplacement interval\u003c\/th\u003e\n\u003ctd\u003eEvery 2 months, or sooner if a test shows phosphate or silicate present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003ctd\u003e$0.15 per litre, at the current pack price\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eReplace the pouch every 2 months even if it looks unchanged — exhausted adsorption media stops working long before it looks any different. Test phosphate and silicate between changes; a reading that climbs back above 0 ppm phosphate or 0.5 ppm silicate means the pouch is spent early and should be swapped sooner than the two-month mark.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater and saltwater aquariums running high phosphate or silicate from feeding, waste or tap water\u003c\/li\u003e\n\u003cli\u003eReef tanks where excess phosphate is limiting hard or soft coral growth\u003c\/li\u003e\n\u003cli\u003ePlanted and community tanks with persistent algae despite otherwise good husbandry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReplacing water changes and feeding discipline — it manages the symptom, not the cause of a rising nutrient load\u003c\/li\u003e\n\u003cli\u003eInstant results. It works over hours to days as water passes through it, not the moment it's dropped in\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety and handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKeep out of reach of children.\u003c\/li\u003e\n\u003cli\u003eHandle the pouch by its mesh casing rather than opening it — the media inside is not meant to be handled loose.\u003c\/li\u003e\n\u003cli\u003eThe pouch will feel warm for a few minutes after rinsing as the media activates. This is expected and not a fault.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-phosphate-test-kit-1-25oz-fresh-saltwater\"\u003eAPI Phosphate Test Kit\u003c\/a\u003e — test before you decide the pouch needs replacing rather than swapping on a calendar alone.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-ammonia-test-kit-fresh-saltwater\"\u003eAPI Ammonia Test Kit Fresh\/Saltwater\u003c\/a\u003e — worth checking alongside phosphate on any tank that's growing algae or clouding up.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-bio-chem-zorb-210l\"\u003eAPI Bio-Chem Zorb\u003c\/a\u003e — for organics and heavy metals, where phosphate and silicate aren't the whole story.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eThis is a consumable, so no manufacturer warranty period applies. That does not affect your rights under the Australian Consumer Law: if the product is faulty, unsafe or not as described, you are entitled to a remedy.\u003c\/p\u003e\n\u003cp\u003eShips as standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow do I know when to replace the pouch?\u003c\/h4\u003e\n\u003cp\u003eTest phosphate and silicate every couple of weeks. Once phosphate reads above 0 ppm or silicate above 0.5 ppm, the pouch is spent, even if that happens before the two-month mark.\u003c\/p\u003e\n\u003ch4\u003eWill it affect my fish or corals directly?\u003c\/h4\u003e\n\u003cp\u003eNo. It works by adsorbing dissolved phosphate and silicate from the water column; it does not add anything to the water that affects livestock directly.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a planted tank?\u003c\/h4\u003e\n\u003cp\u003eYes, but be aware it also removes phosphate that plants use as a nutrient. In a heavily planted, low-algae tank, running it continuously can starve plants as well as algae.\u003c\/p\u003e\n\u003ch4\u003eDoes it work as soon as I drop it in?\u003c\/h4\u003e\n\u003cp\u003eNo. It needs water flowing through it, so results build over hours to days rather than appearing immediately after rinsing and installing it.\u003c\/p\u003e\n\u003ch4\u003eWhy does the pouch feel warm after rinsing?\u003c\/h4\u003e\n\u003cp\u003eThat's the media activating on contact with water, per API's instructions. It's a normal, temporary reaction and not a sign the pouch is faulty.\u003c\/p\u003e","brand":"API","offers":[{"title":"Default Title","offer_id":55242274472227,"sku":"AA2553","price":31.45,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/api-phos-zorb-treats-210l-3000672-1600.jpg?v=1781836678"},{"product_id":"api-bio-chem-zorb-210l","title":"API Bio-Chem Zorb (210L)","description":"\u003cp\u003e\u003cstrong\u003eStrips colour, odour and dissolved organics from a 208 litre tank.\u003c\/strong\u003e API Bio-Chem Zorb is a pre-filled, drop-in chemical filtration pouch. This is the Size 6 large pouch, 283 g, rated by API for aquariums up to 55 US gallons. Inside is a blend of pharmaceutical-grade ion-exchange resins, research-grade organic scavenger resins and high-porosity activated carbon. API states the resin-and-carbon blend is up to three times more effective at clearing water than carbon alone. Replace it every two months.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree media in one pouch\u003c\/strong\u003e — ion-exchange resins, organic scavenger resins and activated carbon, rather than carbon on its own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-in format\u003c\/strong\u003e — it arrives already bagged, so it goes into a canister, hang-on or sump wherever water is flowing past.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClears yellowing and odour\u003c\/strong\u003e — the two problems that make an otherwise healthy tank look and smell neglected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves medication after a course\u003c\/strong\u003e — API's own dosing instructions call for it 48 hours after the final dose of a treatment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh, salt and reef\u003c\/strong\u003e — API rates it for all three, and states it will not release phosphates back into the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-month service life\u003c\/strong\u003e — a fixed, predictable replacement interval rather than a guess.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAPI (Mars Fishcare)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize designation\u003c\/th\u003e\n\u003ctd\u003eSize 6, large pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003ctd\u003e283 g (10 oz), one pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated for\u003c\/th\u003e\n\u003ctd\u003eAquariums up to 55 US gallons, about 208 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003ctd\u003ePharmaceutical-grade ion-exchange resins, research-grade organic scavenger resins, high-porosity activated carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003ePre-filled flow-through pouch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReplacement interval\u003c\/th\u003e\n\u003ctd\u003eEvery 2 months, or sooner if colour or odour returns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, saltwater and reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves medication\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEffect on pH or KH\u003c\/th\u003e\n\u003ctd\u003eNot published by API\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eAbout the 210 L in the title:\u003c\/strong\u003e API rates this pouch in US gallons only, at 55 gallons. That converts to 208 litres. The 210 figure is a rounded conversion that has travelled through the trade, not a number API publishes. We have kept it in the title so the product is still findable, and given you the real one here.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it removes, and what it does not\u003c\/h3\u003e\n\u003cp\u003eThis is the question worth getting right, because API sells three different Zorb pouches and they do different jobs.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSubstance\u003c\/th\u003e\n\u003cth\u003eBio-Chem Zorb\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater discolouration and yellowing\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOdours\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved organics and organic waste\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eToxic gases\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhenols\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy metals\u003c\/td\u003e\n\u003ctd\u003eYes, claimed in freshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedications\u003c\/td\u003e\n\u003ctd\u003eYes — see the warning below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmmonia\u003c\/td\u003e\n\u003ctd\u003eNo. API assigns this to Nitra-Zorb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrite\u003c\/td\u003e\n\u003ctd\u003eNo. API assigns this to Nitra-Zorb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate\u003c\/td\u003e\n\u003ctd\u003eNo. API assigns this to Nitra-Zorb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphate\u003c\/td\u003e\n\u003ctd\u003eNo. API assigns this to Phos-Zorb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilicate\u003c\/td\u003e\n\u003ctd\u003eNo. API assigns this to Phos-Zorb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrace elements in saltwater\u003c\/td\u003e\n\u003ctd\u003eNo — API's label states it will not strip them\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf your problem is a nitrate reading rather than a tint, this is the wrong pouch. Chemical filtration and nutrient export are different jobs and no single medium does both.\u003c\/p\u003e\n\n\u003ch3\u003eUsing it alongside medication\u003c\/h3\u003e\n\u003cp\u003eTake the pouch out of the filter before you start a course of treatment. It will adsorb the medication you are paying for and pull the dose below effective concentration.\u003c\/p\u003e\n\u003cp\u003ePut it back after the course finishes, or fit a fresh one. API's own instructions for Liquid Super Ick Cure say to use Bio-Chem Zorb or activated carbon 48 hours after the final dose, which is exactly the right use for it: stripping the residue once the treatment has done its work.\u003c\/p\u003e\n\u003cp\u003eThis cuts both ways, and it is the most common mistake made with any carbon-bearing medium. Leaving it in during treatment is why a course sometimes appears not to work.\u003c\/p\u003e\n\n\u003ch3\u003eFitting it to your filter\u003c\/h3\u003e\n\u003cp\u003eThe Size 6 pouch is marketed for the Rena Filstar XP, API Nexx and Rena SmartFilter canisters. It is not restricted to them: it comes in its own flow-through bag, so it will work in any canister, power filter or wet-and-dry sump with room for a 283 g pouch in the water path.\u003c\/p\u003e\n\u003cp\u003eRinse the pouch under a tap first to wash off loose dust, then sit it where water is forced through it rather than around it. The pouch does not need to rinse clear before it goes in.\u003c\/p\u003e\n\u003cp\u003eMedia placed after mechanical filtration lasts longer. Put your sponge or floss upstream so the resin is not clogging with detritus it was never meant to catch.\u003c\/p\u003e\n\n\u003ch3\u003eReplacing it\u003c\/h3\u003e\n\u003cp\u003eAPI's product page says to replace the pouch every two months, or sooner if the aquarium is heavily polluted or colour and odour reappear. That is the figure to work to.\u003c\/p\u003e\n\u003cp\u003eAPI's website FAQ separately describes its Zorb pouches as rechargeable by rinsing in warm tap water. We would not rely on that here. Carbon is not regenerated by rinsing, and unlike Nitra-Zorb, Bio-Chem Zorb has no published recharge procedure. Treat it as rinse-then-use, then replace.\u003c\/p\u003e\n\u003cp\u003eReturning colour or odour is the practical signal that the pouch is spent, and it is worth acting on before the two months are up in a heavily stocked tank.\u003c\/p\u003e\n\n\u003ch3\u003eBio-Chem Zorb, Nitra-Zorb or Phos-Zorb?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003eBio-Chem Zorb\u003c\/th\u003e\n\u003cth\u003eNitra-Zorb\u003c\/th\u003e\n\u003cth\u003ePhos-Zorb\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContains\u003c\/th\u003e\n\u003ctd\u003eIon-exchange resins, organic scavenger resins, activated carbon\u003c\/td\u003e\n\u003ctd\u003eIon-exchange media, no carbon claimed\u003c\/td\u003e\n\u003ctd\u003ePhosphate and silicate selective media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003eColour, odour, organics, toxic gases, phenols, heavy metals, medication\u003c\/td\u003e\n\u003ctd\u003eAmmonia, nitrite, nitrate\u003c\/td\u003e\n\u003ctd\u003ePhosphate, silicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRechargeable\u003c\/th\u003e\n\u003ctd\u003eNo published procedure\u003c\/td\u003e\n\u003ctd\u003eYes, by soaking in salt solution\u003c\/td\u003e\n\u003ctd\u003eRinse to activate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReplace\u003c\/th\u003e\n\u003ctd\u003eEvery 2 months\u003c\/td\u003e\n\u003ctd\u003eEvery 2 months\u003c\/td\u003e\n\u003ctd\u003eEvery 2 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFresh, salt and reef\u003c\/td\u003e\n\u003ctd\u003eFreshwater only\u003c\/td\u003e\n\u003ctd\u003eFresh and salt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBio-Chem Zorb is also distinct from plain activated filter carbon. API's argument for the blend is that the resins pick up organics the carbon does not, which is where the three-times-clearer claim comes from.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater, marine and reef aquariums up to about 208 litres\u003c\/li\u003e\n\u003cli\u003eTanks yellowed by driftwood tannins, or smelling of organics\u003c\/li\u003e\n\u003cli\u003eClearing residual medication once a treatment course has finished\u003c\/li\u003e\n\u003cli\u003eCanister, hang-on and sump filters with room for a 283 g pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemoving ammonia, nitrite or nitrate. That is Nitra-Zorb's job\u003c\/li\u003e\n\u003cli\u003eRemoving phosphate or silicate. That is Phos-Zorb's job\u003c\/li\u003e\n\u003cli\u003eLeaving in the filter during a course of medication\u003c\/li\u003e\n\u003cli\u003eTanks over about 208 litres on a single pouch. Scale the number of pouches to the volume\u003c\/li\u003e\n\u003cli\u003ePlanted tanks being dosed with liquid fertiliser, where chemical media works against the dosing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-freshwater-master-multi-test-kit-5-in-1\"\u003eAPI Freshwater Master Multi Test Kit 5 in 1\u003c\/a\u003e — tells you whether the problem is organics, which this pouch handles, or nitrate, which it does not.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-melafix\"\u003eAPI Melafix\u003c\/a\u003e — the pouch comes out while you dose it, and goes back in 48 hours after the last dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-quick-start\"\u003eAPI Quick Start\u003c\/a\u003e — for restarting the biological filter after a treatment course.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-stress-coat\"\u003eAPI Stress Coat\u003c\/a\u003e — conditions the replacement water at the change you will be doing anyway.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-aquarium-salt\"\u003eAPI Aquarium Salt\u003c\/a\u003e — the freshwater tonic salt used during and after treatment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eThis is a consumable filter medium, so no manufacturer warranty period applies. That does not affect your rights under the Australian Consumer Law: if the product is faulty, unsafe or not as described, you are entitled to a remedy.\u003c\/p\u003e\n\u003cp\u003eShips as standard freight. Store the pouch sealed and dry until you need it, as activated carbon adsorbs from air as readily as from water.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat size tank does API Bio-Chem Zorb Size 6 suit?\u003c\/h4\u003e\n\u003cp\u003eAPI rates the 283 g Size 6 pouch for aquariums up to 55 US gallons, which is about 208 litres. For a larger tank, use more than one pouch rather than expecting one to stretch.\u003c\/p\u003e\n\u003ch4\u003eDoes API Bio-Chem Zorb remove nitrate?\u003c\/h4\u003e\n\u003cp\u003eNo. API makes no ammonia, nitrite or nitrate removal claim for Bio-Chem Zorb, and assigns those to a different product, Nitra-Zorb. Bio-Chem Zorb targets colour, odour, dissolved organics, toxic gases, phenols and heavy metals.\u003c\/p\u003e\n\u003ch4\u003eDo I need to remove Bio-Chem Zorb when medicating my tank?\u003c\/h4\u003e\n\u003cp\u003eYes. It adsorbs medication and will pull the dose below the level needed to work. Take it out before you start dosing, and put it back or fit a fresh pouch about 48 hours after the final dose to strip the residue.\u003c\/p\u003e\n\u003ch4\u003eHow often should Bio-Chem Zorb be replaced?\u003c\/h4\u003e\n\u003cp\u003eAPI's own product page says every two months, or sooner if the aquarium is heavily polluted or colour and odour return. Some older packaging says monthly; two months is API's current figure.\u003c\/p\u003e\n\u003ch4\u003eCan Bio-Chem Zorb be recharged and reused?\u003c\/h4\u003e\n\u003cp\u003eAPI's website FAQ describes its Zorb pouches as rechargeable by rinsing in warm tap water, but API's own product page for this pouch says to replace it every two months and gives no recharge procedure. Since activated carbon cannot be regenerated by rinsing, treat this pouch as single-use and replace it.\u003c\/p\u003e\n\u003ch4\u003eIs Bio-Chem Zorb reef safe?\u003c\/h4\u003e\n\u003cp\u003eAPI rates it for freshwater, saltwater and reef aquariums, and its label states it will not remove trace elements from saltwater and will not release phosphates. API publishes no statement about its effect on pH or KH, so we make no claim there.\u003c\/p\u003e","brand":"API","offers":[{"title":"Default Title","offer_id":55242283778339,"sku":"AA2357","price":43.15,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/api-bio-chem-zorb-210l-6357-1600.jpg?v=1781836678"},{"product_id":"red-sea-reefer-200-micron-filter-bag-100mm-260mm","title":"Red Sea Reefer 200 Micron Filter Bag 100mm\/260mm","description":"\u003cp\u003eFine 200-micron mechanical filtration for your sump.\u003c\/p\u003e\n\u003cp\u003eThe Red Sea Reefer 200 Micron Filter Bag (100mm\/260mm) traps fine detritus before it breaks down, polishing your water as it returns to the sump.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Red Sea filter bag\u003c\/li\u003e\n\u003cli\u003e200-micron fine mechanical filtration\u003c\/li\u003e\n\u003cli\u003eFits Reefer filter sock holders\u003c\/li\u003e\n\u003cli\u003eReusable — rinse and refit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e Keep a couple on rotation so you always have a clean one ready. Our North Lakes team can help.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Red Sea\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 100mm \/ 260mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicron:\u003c\/strong\u003e 200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Filter sock \/ bag\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e BA0139\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarcode:\u003c\/strong\u003e 7290100779705\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":55242298622243,"sku":"BA0139","price":16.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/red-sea-reefer-200-micron-filter-bag-100mm260mm-3000143-1600.jpg?v=1781836766"},{"product_id":"api-activated-carbon","title":"API Activated Carbon","description":"\u003cp\u003e\u003cstrong\u003eStrips colour, odour and dissolved organics straight out of the water.\u003c\/strong\u003e API Activated Filter Carbon is loose chemical filter media for freshwater and saltwater aquariums. It comes as a carton of bulk carbon rather than a pre-filled pouch, so you refill your own cartridge or media bag with it. API's rate is half a cup for every 38 L of aquarium water, and it suits any aquarium filter.\u003c\/p\u003e\n\u003cp\u003eSold in three carton sizes: 156 g, 312 g and 624 g. All three are the same media at the same dose rate.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk carbon, not a pouch\u003c\/strong\u003e — you choose how much goes in, which is cheaper per gram than cartridge refills and lets you part-fill a small filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits any filter\u003c\/strong\u003e — API states it may be used in all filter cartridges. Internal, hang-on, canister or sump, as long as water passes through it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves colours and odours\u003c\/strong\u003e — the yellowing that builds up in a tank with driftwood, and the earthy smell that no water change quite fixes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves residual medication\u003c\/strong\u003e — API lists medications among what it removes, which makes it the standard way to clear a treatment course out of a tank once dosing has finished.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater, saltwater and pond\u003c\/strong\u003e — API gives the same rate for aquarium or pond water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarton keeps the remainder dry\u003c\/strong\u003e — API supplies it in a resealable carton for storage between refills.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much to use\u003c\/h3\u003e\n\u003cp\u003eAPI's stated rate is per volume of aquarium water, not per pack:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAquarium or pond volume\u003c\/th\u003e\n\u003cth\u003eCarbon\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e38 L (10 US gallons)\u003c\/td\u003e\n\u003ctd\u003eHalf a US cup, or 8 tablespoons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAPI measures this media by volume and sells it by weight, and does not publish a bulk density. That means there is no honest way to convert a carton size into a \"treats X litres\" figure, so we have not printed one. Measure with a cup, not by eye.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003ctd\u003eActivated carbon — chemical filtration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eLoose bulk media in a carton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRate\u003c\/th\u003e\n\u003ctd\u003eHalf a US cup (8 tablespoons) per 38 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003eOrganic waste, colours, odours, medications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater, saltwater and ponds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter compatibility\u003c\/th\u003e\n\u003ctd\u003eAll aquarium filter cartridges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia bag\u003c\/th\u003e\n\u003ctd\u003eNot included — supplied as loose media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCarton sizes\u003c\/th\u003e\n\u003ctd\u003e156 g, 312 g, 624 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhich carton do I need?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCarton\u003c\/th\u003e\n\u003cth\u003eAPI article\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eTypical use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e156 g\u003c\/td\u003e\n\u003ctd\u003e76A\u003c\/td\u003e\n\u003ctd\u003eAA0424\u003c\/td\u003e\n\u003ctd\u003eA single small internal or hang-on filter, or a first try\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e312 g\u003c\/td\u003e\n\u003ctd\u003e76B\u003c\/td\u003e\n\u003ctd\u003eAA0426\u003c\/td\u003e\n\u003ctd\u003eThe usual pick — a canister basket, or several refills of a smaller filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e624 g\u003c\/td\u003e\n\u003ctd\u003e76C\u003c\/td\u003e\n\u003ctd\u003eAA0425\u003c\/td\u003e\n\u003ctd\u003eMultiple tanks, a large canister, or a pond filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat it removes, and what it does not\u003c\/h3\u003e\n\u003cp\u003eAPI's own list of what this carbon removes is: organic waste, colours, odours and medications. It is a polishing and clarity media.\u003c\/p\u003e\n\u003cp\u003eAPI does not claim that it removes ammonia, nitrite or nitrate, and you should not buy it for that job. API sells separate media for each of those:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-ammo-chips\"\u003eAPI Ammo Chips\u003c\/a\u003e or \u003ca href=\"\/products\/api-ammo-carb\"\u003eAPI Ammo Carb\u003c\/a\u003e — where ammonia is the problem. Ammo Carb combines both jobs in one media.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-nitra-zorb-210l\"\u003eAPI Nitra-Zorb\u003c\/a\u003e — for nitrogenous waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-phos-zorb-treats-210l\"\u003eAPI Phos-Zorb\u003c\/a\u003e — for phosphate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003ePut the carbon where water is forced through it rather than around it. Carbon sitting in a still corner of a sump does very little.\u003c\/p\u003e\n\u003cp\u003eTake it out before you dose a medication. API states this media removes medications, so leaving it in during a treatment course will strip the dose you have just paid for. Put fresh carbon back in once the course is finished to clear the residue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOn replacement interval:\u003c\/strong\u003e API publishes no service life for Activated Filter Carbon — no figure in weeks or months — and does not state whether it can be rinsed and reused. We are not going to invent one. Carbon is spent when the water starts yellowing again or the odour returns; that is your signal to change it. Note that API's separate Super Activated Carbon product does carry a monthly replacement instruction, but that is a different product and its instructions do not transfer to this one.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eUse it for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTannin-stained water from driftwood, where the tea colour will not shift with water changes.\u003c\/li\u003e\n\u003cli\u003eClearing a medication course out of a display tank once treatment is over.\u003c\/li\u003e\n\u003cli\u003ePersistent odour, and general water polishing on a new setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not use it for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAmmonia, nitrite or nitrate. API makes no such claim for this media.\u003c\/li\u003e\n\u003cli\u003ePlanted tanks where you are dosing liquid fertiliser — carbon can strip what you have added, so run it only when you need it.\u003c\/li\u003e\n\u003cli\u003eReef tanks where low phosphate matters. API states its separate Super Activated Carbon will not raise phosphate, but makes no such statement about this product, so we cannot pass that claim on.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat API does not publish\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeedstock.\u003c\/strong\u003e Whether it is coal-based or coconut-shell is not stated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrain size and surface area.\u003c\/strong\u003e No mesh size or m²\/g figure is published.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffect on pH, KH or phosphate.\u003c\/strong\u003e Not published for this product.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement interval.\u003c\/strong\u003e Not published, as above.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-ammo-carb\"\u003eAPI Ammo Carb\u003c\/a\u003e — carbon and ammonia-removing media in one, if you want both jobs from a single basket.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-bio-chem-zorb-210l\"\u003eAPI Bio-Chem Zorb\u003c\/a\u003e — the pouched alternative if you would rather not measure loose media.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-melafix\"\u003eAPI Melafix\u003c\/a\u003e — the kind of treatment you take the carbon out for, and put fresh carbon in after.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/api-freshwater-master-multi-test-kit-5-in-1\"\u003eAPI Freshwater Master Test Kit\u003c\/a\u003e — confirm whether your problem is chemistry or clarity before you buy media for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/api\"\u003eThe full API range\u003c\/a\u003e — the rest of the filtration media line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eFilter media is a consumable and API publishes no warranty term for it. Your rights under the Australian Consumer Law apply regardless and are not limited by anything stated here. All three carton sizes ship as standard freight.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow much API Activated Filter Carbon do I use?\u003c\/h4\u003e\n\u003cp\u003eAPI's rate is half a US cup, or 8 tablespoons, for every 38 L of aquarium or pond water. The rate is the same whichever carton size you buy.\u003c\/p\u003e\n\u003ch4\u003eDoes a media bag come with it?\u003c\/h4\u003e\n\u003cp\u003eNo. API supplies this as loose carbon in a carton, intended for refilling your own filter cartridge or a media bag you already have. Budget for a bag if your filter does not have a refillable cartridge.\u003c\/p\u003e\n\u003ch4\u003eHow often should I replace API Activated Filter Carbon?\u003c\/h4\u003e\n\u003cp\u003eAPI does not publish a replacement interval for this product. In practice you change it when the water begins yellowing again or odour returns. Do not apply the monthly figure from API's Super Activated Carbon — that is a different product.\u003c\/p\u003e\n\u003ch4\u003eDo I need to remove the carbon when medicating my tank?\u003c\/h4\u003e\n\u003cp\u003eYes. API states this carbon removes medications, so it will strip the treatment out of the water. Take it out before dosing and put fresh carbon in once the course is complete.\u003c\/p\u003e\n\u003ch4\u003eWill it remove ammonia or nitrate?\u003c\/h4\u003e\n\u003cp\u003eAPI makes no ammonia, nitrite or nitrate claim for this carbon. Use API Ammo Chips or API Ammo Carb for ammonia and API Nitra-Zorb for nitrogenous waste.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a saltwater tank?\u003c\/h4\u003e\n\u003cp\u003eYes. API states this media is for fresh and saltwater aquariums, and gives the same rate for pond water.\u003c\/p\u003e","brand":"API","offers":[{"title":"312 g","offer_id":55244123373859,"sku":"AA0426","price":24.95,"currency_code":"AUD","in_stock":true},{"title":"624 g","offer_id":55244123406627,"sku":"AA0425","price":43.95,"currency_code":"AUD","in_stock":true},{"title":"156 g","offer_id":55335273595171,"sku":"AA0424","price":11.66,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BE11.png?v=1772082083"},{"product_id":"seachem-matrix","title":"Seachem Matrix","description":"\u003cp\u003eGenuine Seachem filter media for cleaner water.\u003c\/p\u003e\n\u003cp\u003eSeachem Matrix is a high-porosity bio-media that hosts both aerobic and anaerobic bacteria for biological and nitrate filtration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy aquarists use it\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHuge surface area for bacteria\u003c\/li\u003e\n\u003cli\u003eSupports nitrifying and denitrifying bacteria\u003c\/li\u003e\n\u003cli\u003eHelps reduce nitrate\u003c\/li\u003e\n\u003cli\u003eLasts for years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e Available in several sizes — ask us which suits your tank. Run in a reactor or media bag for best contact. Our North Lakes team can help.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Seachem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Biological filter media\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Seachem","offers":[{"title":"250 mL","offer_id":55244154765603,"sku":null,"price":15.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244154798371,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":true},{"title":"1 L","offer_id":55244154831139,"sku":null,"price":50.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244154863907,"sku":null,"price":89.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244154896675,"sku":null,"price":146.95,"currency_code":"AUD","in_stock":true},{"title":"20 L","offer_id":55244154929443,"sku":null,"price":399.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0119-matrix-4-l_54bad967-ccd1-4a91-a244-907183d4cbc1.png?v=1782710658"},{"product_id":"seachem-purigen","title":"Seachem Purigen","description":"\u003cp\u003e\u003cstrong\u003eA resin that polishes water clear by capturing organics before they become nitrate.\u003c\/strong\u003e Seachem Purigen is a synthetic adsorbent, not a carbon — it removes dissolved and colloidal organics directly, rather than waiting for them to break down into ammonia and nitrate first. Run it in a media bag or reactor and it noticeably improves clarity within a day. It's regenerable with a bleach soak, so the same batch can be reused rather than thrown away when it's exhausted.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves organics at the source\u003c\/strong\u003e — captures dissolved and colloidal waste before it's broken down into ammonia, nitrite and nitrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisibly polishes water\u003c\/strong\u003e — noticeably clearer water within 24 hours of use in most tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegenerable\u003c\/strong\u003e — a 1:1 household bleach and water soak restores it to original colour and activity, so one batch can be reused repeatedly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour-change exhaustion indicator\u003c\/strong\u003e — beads darken from their original colour to brown or black as they exhaust.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFresh and marine safe.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003ctd\u003eSynthetic adsorbent resin (organic scavenger, not activated carbon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDosage\u003c\/th\u003e\n\u003ctd\u003e1 mL Purigen per 4 L of aquarium water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRegenerable\u003c\/th\u003e\n\u003ctd\u003eYes — 1:1 household bleach:water soak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRinse before use\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended bag\u003c\/th\u003e\n\u003ctd\u003eFine mesh, 180 micron or less\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes available\u003c\/th\u003e\n\u003ctd\u003e100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003ePurigen's dosage scales with tank volume, at 1 mL per 4 L. The 250 mL size is the sweet spot per litre of water treated — it works out cheaper than both the 100 mL bottle below it and the 4 L above it, so buying bigger isn't automatically better value with Purigen the way it is with Prime or Pristine.\u003c\/p\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eWater volume serviced\u003c\/th\u003e\n\u003cth\u003eCost per litre serviced\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e400 L\u003c\/td\u003e\n\u003ctd\u003e9c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e1,000 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e2,000 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e4,000 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e8,000 L\u003c\/td\u003e\n\u003ctd\u003e4c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e16,000 L\u003c\/td\u003e\n\u003ctd\u003e4c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eThese figures are the cost to service that volume once, before regeneration. Because Purigen can be regenerated with bleach and reused rather than replaced, the real cost per litre over the media's working life is considerably lower than the table above.\u003c\/p\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRinse before first use.\u003c\/li\u003e\n\u003cli\u003eRun in a fine mesh bag (180 micron or less) inside a filter, reactor or sump — not loose in a filter basket.\u003c\/li\u003e\n\u003cli\u003eWatch for the colour change from its original colour to brown or black as the sign it needs regenerating or replacing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTo regenerate:\u003c\/strong\u003e soak 24 hours in a 1:1 solution of regular unscented household bleach and water, in a non-metallic container, in a well-ventilated area away from children. Rinse well, then soak 8 hours in a dechlorinator solution (4 tablespoons of Seachem Prime, or equivalent, per cup of water) and rinse well again. For freshwater tanks, an optional 4-hour soak in a buffer solution follows. Do not reuse if any bleach or chlorine odour remains — test for residual chlorine if unsure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater and marine aquariums wanting clearer water and lower organic load, run alongside normal biological and mechanical filtration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e biological filtration on its own — Purigen removes organics, it doesn't replace a biofilter or nitrifying bacteria.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your rights under Australian Consumer Law in addition to any manufacturer terms. Standard parcel freight.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eIs Purigen the same as activated carbon?\u003c\/h4\u003e\u003cp\u003eNo — it's a synthetic adsorbent resin that targets dissolved and colloidal organics directly, rather than carbon's broader adsorption. Many aquarists run both, in separate bags.\u003c\/p\u003e\u003ch4\u003eHow do I know when Purigen needs regenerating?\u003c\/h4\u003e\u003cp\u003eWatch the beads: they darken from their original colour to brown or black as they exhaust.\u003c\/p\u003e\u003ch4\u003eCan I regenerate Purigen more than once?\u003c\/h4\u003e\u003cp\u003eSeachem doesn't publish a maximum number of regeneration cycles — aquarists commonly regenerate the same batch multiple times before replacing it.\u003c\/p\u003e\u003ch4\u003eDo I need a reactor to run Purigen?\u003c\/h4\u003e\u003cp\u003eNo — a fine mesh media bag in a canister filter, hang-on-back or sump works, though a reactor gives more even water contact.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244155224355,"sku":null,"price":37.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244155257123,"sku":null,"price":54.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244155289891,"sku":null,"price":112.95,"currency_code":"AUD","in_stock":true},{"title":"1 L","offer_id":55244155322659,"sku":null,"price":225.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244155355427,"sku":null,"price":338.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244155388195,"sku":null,"price":736.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0168-purigen-2-l_37d6d1a5-0ebe-410b-92d8-9ce6c52b12ed.png?v=1782710658"},{"product_id":"seachem-phosnet","title":"Seachem PhosNet","description":"\u003cp\u003e\u003cstrong\u003eThe highest-capacity phosphate remover in Seachem's range, made synthetically for less dust.\u003c\/strong\u003e Seachem PhosNet is a synthetic granular ferric oxide (GFO) that binds 1.41 mg of phosphate per gram of media — ahead of Seachem's own PhosGuard (0.87 mg\/g) and PhosBond (1.19 mg\/g) — with a similar pull on silicate.\u003c\/p\u003e\n\u003cp\u003eBeing synthetic rather than mined, PhosNet runs cleaner in a reactor than natural GFO: less dust means less fine media escaping into the display, and more consistent performance from batch to batch. It suits reef tanks and freshwater systems chasing low phosphate for coral colour or algae control.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.41 mg phosphate per gram\u003c\/strong\u003e — the highest binding capacity of Seachem's three phosphate media, so less product is needed for the same nutrient load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSynthetic GFO, low dust\u003c\/strong\u003e — cleaner to handle and rinse than natural granular ferric oxide, and less prone to clouding the tank on startup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves phosphate and silicate together\u003c\/strong\u003e — one media for both of the nutrients that feed nuisance algae and diatoms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and marine safe\u003c\/strong\u003e, at different dose rates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e125 g is the value sweet spot\u003c\/strong\u003e — see the size comparison below; the bigger packs don't scale down in price the way you'd expect.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003ctd\u003eSynthetic granular ferric oxide (GFO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinding capacity\u003c\/th\u003e\n\u003ctd\u003e1.41 mg phosphate per gram of media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDose rate\u003c\/th\u003e\n\u003ctd\u003e50 g per 200 L saltwater, or 50 g per 400 L freshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eCanister filter, media chamber, or high-flow trickle filter area — filter bag recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine case where bigger isn't automatically cheaper. The 125 g pack treats 500 L of saltwater for 10c a litre — the best value in the range. The 250 g and 500 g packs both work out slightly dearer per litre, because their price doesn't scale down at quite the rate the dosing ratio would suggest.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eTreats (saltwater)\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 g\u003c\/td\u003e\n\u003ctd\u003e$42.95\u003c\/td\u003e\n\u003ctd\u003e200 L\u003c\/td\u003e\n\u003ctd\u003e$0.21 per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e125 g\u003c\/td\u003e\n\u003ctd\u003e$54.95\u003c\/td\u003e\n\u003ctd\u003e500 L\u003c\/td\u003e\n\u003ctd\u003e$0.10 per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 g\u003c\/td\u003e\n\u003ctd\u003e$119.95\u003c\/td\u003e\n\u003ctd\u003e1,000 L\u003c\/td\u003e\n\u003ctd\u003e$0.11 per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 g\u003c\/td\u003e\n\u003ctd\u003e$228.95\u003c\/td\u003e\n\u003ctd\u003e2,000 L\u003c\/td\u003e\n\u003ctd\u003e$0.11 per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFreshwater volumes treated are roughly double the saltwater figures above, since PhosNet is dosed lighter in freshwater. The litres above use the saltwater dose, the more conservative of the two.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e reef and FOWLR marine tanks, planted and community freshwater tanks, and heavier phosphate loads where a higher-capacity media means fewer reactor refills.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e as a substitute for regular water changes or nutrient export via protein skimming — it treats the symptom, not the source of high nutrient input.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDirections and care\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRinse before use to settle any fine dust.\u003c\/li\u003e\n\u003cli\u003ePosition to maximise water flow through the media without letting it tumble — a canister filter, dedicated media chamber, or a filter bag in a high-flow trickle area all work.\u003c\/li\u003e\n\u003cli\u003eLeave in place for around 4 days, then test phosphate and silicate. Replace once levels stop dropping toward roughly 0.02 mg\/L; if they're still falling, leave it running.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003eNo specific handling warnings beyond standard practice for filter media: rinse before use and avoid dosing into a bare-bottom tank where dust could settle on livestock.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA phosphate and silicate test kit\u003c\/strong\u003e — to confirm exhaustion rather than replacing on a guess.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA media reactor\u003c\/strong\u003e — GFO performs best under even, tumble-free flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeachem PhosGuard\u003c\/strong\u003e — the lower-capacity, lower-cost-per-pack alumina alternative where a smaller phosphate load doesn't need PhosNet's extra binding capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard quality guarantee in addition to your rights under Australian Consumer Law. Standard shipping applies to all pack sizes.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat's the difference between PhosNet and PhosGuard?\u003c\/h4\u003e\n\u003cp\u003eBoth remove phosphate and silicate, but PhosNet is a synthetic GFO with a higher binding capacity (1.41 mg\/g against PhosGuard's 0.87 mg\/g), so it clears a heavier phosphate load from a smaller volume of media.\u003c\/p\u003e\n\u003ch4\u003eWhich pack size is the best value?\u003c\/h4\u003e\n\u003cp\u003eThe 125 g pack, at 10c per litre of saltwater treated — cheaper per litre than either the 250 g or 500 g packs.\u003c\/p\u003e\n\u003ch4\u003eDo I need a reactor for PhosNet?\u003c\/h4\u003e\n\u003cp\u003eA reactor gives the most even flow, but a filter bag in a high-flow trickle area or canister chamber also works.\u003c\/p\u003e\n\u003ch4\u003eHow do I know when to replace it?\u003c\/h4\u003e\n\u003cp\u003eTest phosphate and silicate from around day 4 onward. Once readings stop dropping toward about 0.02 mg\/L, the media is exhausted.\u003c\/p\u003e\n\u003ch4\u003eIs PhosNet safe for a reef tank?\u003c\/h4\u003e\n\u003cp\u003eYes, it's designed for fresh and marine use, including reef systems chasing low phosphate for coral colour.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"50 g","offer_id":55244168626467,"sku":null,"price":42.95,"currency_code":"AUD","in_stock":true},{"title":"125 g","offer_id":55244168659235,"sku":null,"price":54.95,"currency_code":"AUD","in_stock":true},{"title":"250 g","offer_id":55244168692003,"sku":null,"price":119.95,"currency_code":"AUD","in_stock":true},{"title":"500 g","offer_id":55244168724771,"sku":null,"price":228.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/1255-phosnet-500_g.png?v=1782710660"},{"product_id":"seachem-phosbond","title":"Seachem PhosBond","description":"\u003cp\u003e\u003cstrong\u003eStrips phosphate and silicate out of the water column to starve nuisance algae at the source.\u003c\/strong\u003e Seachem PhosBond combines granular ferric oxide with aluminium oxide in one media, removing both phosphate and silicate together rather than needing two separate products. It works in fresh and saltwater, is reusable until exhausted, and never leaches what it's captured back into the tank.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves phosphate and silicate together\u003c\/strong\u003e — one media instead of running two separate chemical filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and saltwater safe\u003c\/strong\u003e — the same media, different dose rates for each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable\u003c\/strong\u003e — can be removed, dried and returned to service until it's exhausted; it doesn't leach phosphate or silicate back out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWon't crash your levels overnight\u003c\/strong\u003e — dosed correctly, it draws phosphate down gradually rather than shocking sensitive invertebrates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrom 2c per litre of treated saltwater on the 4 L pack\u003c\/strong\u003e — buying the largest size you'll use costs meaningfully less per litre treated than the smallest.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003ePhosBond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eFerric oxide coated aluminium oxide (GFO + aluminium oxide blend)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003ePhosphate and silicate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSaltwater dose\u003c\/th\u003e\n\u003ctd\u003e60 mL per 200 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreshwater dose\u003c\/th\u003e\n\u003ctd\u003e60 mL per 400 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse in\u003c\/th\u003e\n\u003ctd\u003eReactor, canister filter, media chamber, box filter or high-flow area of a trickle filter, ideally in a media bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReusable\u003c\/th\u003e\n\u003ctd\u003eYes — dry and return to service until exhausted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes\u003c\/th\u003e\n\u003ctd\u003e100 mL, 250 mL, 500 mL, 1 L, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003cp\u003eThe dose is the same ratio at every size — 60 mL per 200 L of saltwater, or 60 mL per 400 L of freshwater — so bigger packs simply cost less per litre of water treated, not a different formula. Buy based on the size of your system and how often you plan to refresh the media, not just the sticker price of the bottle.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eTreats (saltwater)\u003c\/th\u003e\n\u003cth\u003eCost per litre (saltwater)\u003c\/th\u003e\n\u003cth\u003eTreats (freshwater)\u003c\/th\u003e\n\u003cth\u003eCost per litre (freshwater)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e$34.95\u003c\/td\u003e\n\u003ctd\u003e~333 L\u003c\/td\u003e\n\u003ctd\u003e10c per litre\u003c\/td\u003e\n\u003ctd\u003e~667 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e$43.95\u003c\/td\u003e\n\u003ctd\u003e~833 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003ctd\u003e~1,667 L\u003c\/td\u003e\n\u003ctd\u003e2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e$77.95\u003c\/td\u003e\n\u003ctd\u003e~1,667 L\u003c\/td\u003e\n\u003ctd\u003e4c per litre\u003c\/td\u003e\n\u003ctd\u003e~3,333 L\u003c\/td\u003e\n\u003ctd\u003e2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e$133.95\u003c\/td\u003e\n\u003ctd\u003e~3,333 L\u003c\/td\u003e\n\u003ctd\u003e4c per litre\u003c\/td\u003e\n\u003ctd\u003e~6,667 L\u003c\/td\u003e\n\u003ctd\u003e2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e$358.95\u003c\/td\u003e\n\u003ctd\u003e~13,333 L\u003c\/td\u003e\n\u003ctd\u003e2c per litre\u003c\/td\u003e\n\u003ctd\u003e~26,667 L\u003c\/td\u003e\n\u003ctd\u003e1c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eFigures are based on Seachem's published dose rate, calculated at each size's list price. The 100 mL bottle costs roughly five times more per litre of saltwater treated than the 4 L pack — worth knowing if you're running a large reef system and refreshing media regularly.\u003c\/p\u003e\u003ch3\u003eSetup and use\u003c\/h3\u003e\u003cp\u003eRinse the media before use, then run it in a media bag inside a canister filter, media chamber, box filter, or the high-flow section of a trickle filter or reactor — anywhere water passes through it without the granules tumbling against each other. Test phosphate after 4 days; if it hasn't dropped to around 0.02 mg\/L, leave the media in place and test again in a few more days. Once levels are low, PhosBond can stay in place until they start climbing again — there's no need to run it constantly once your system is stable.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e reef tanks and FOWLR systems fighting nuisance algae, freshwater planted or community tanks with excess phosphate, anyone wanting to remove silicate alongside phosphate in one pass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e dosing all at once at a rate beyond the label — overdosing pulls phosphate down too fast and can stress sensitive invertebrates. Follow the stated dose rather than adding extra for a faster result.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003ePhosBond can be removed, rinsed and dried between uses and returned to service until it's fully exhausted — it doesn't release what it's captured back into the water. Replace it once it stops bringing phosphate back down after a few days in place.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Seachem's standard quality guarantee at the time of sale, in addition to your rights under Australian Consumer Law. Ships as a standard parcel at every pack size.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eCan I use PhosBond in a freshwater tank?\u003c\/h4\u003e\u003cp\u003eYes. Use half the saltwater dose — 60 mL per 400 L of freshwater rather than 60 mL per 200 L of saltwater.\u003c\/p\u003e\u003ch4\u003eWill it hurt my invertebrates?\u003c\/h4\u003e\u003cp\u003eDosed correctly, no. Overdosing is the risk — it can pull phosphate down too quickly and stress sensitive invertebrates, so stick to the stated rate rather than adding extra.\u003c\/p\u003e\u003ch4\u003eDo I need a reactor, or can I use a media bag?\u003c\/h4\u003e\u003cp\u003eA media bag in a canister filter, media chamber, box filter or high-flow area works well — a reactor isn't required, though it can improve contact time on larger systems.\u003c\/p\u003e\u003ch4\u003eHow do I know when to replace it?\u003c\/h4\u003e\u003cp\u003eTest your phosphate around 4 days after installing fresh media. Once it stops bringing levels back down to roughly 0.02 mg\/L, it's time to replace it.\u003c\/p\u003e\u003ch4\u003eIs the bigger pack actually better value?\u003c\/h4\u003e\u003cp\u003eYes — at saltwater dosing, the 4 L pack works out to around 2c per litre of water treated, versus around 10c per litre on the 100 mL bottle.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244173508899,"sku":null,"price":34.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244173541667,"sku":null,"price":43.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244173574435,"sku":null,"price":77.95,"currency_code":"AUD","in_stock":true},{"title":"1 L","offer_id":55244173607203,"sku":null,"price":133.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244173639971,"sku":null,"price":358.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/1263-phosbond-4-l_4ca05e62-72d8-4d25-af9b-574f26c19bcd.png?v=1782710722"},{"product_id":"seachem-matrixcarbon","title":"Seachem MatrixCarbon","description":"\u003cp\u003e\u003cstrong\u003eSpherical activated carbon that keeps flowing instead of clogging.\u003c\/strong\u003e Seachem MatrixCarbon is a premium bead-shaped activated carbon for fresh and saltwater aquariums, sized from 100 mL spare-parts-drawer bottles up to 4 L for large systems. Seachem's own dosing guide states 250 mL treats roughly 400 L of aquarium water for several months, so every pack size scales in a straight line from a nano tank to a fish room.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpherical bead shape\u003c\/strong\u003e — resists compacting and channelling the way granular carbon can, so water keeps moving through the whole bed rather than finding one easy path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow ash content\u003c\/strong\u003e — Seachem states this minimises the carbon's own impact on pH, unlike cheaper carbons that can leach alkalinity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves organics, colour and odour\u003c\/strong\u003e — clears tannin tint, general odour and dissolved organics from the water column.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and saltwater safe\u003c\/strong\u003e — one product across the whole store, no separate marine version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats water from 5c per litre\u003c\/strong\u003e on the largest pack — see Specifications below for every size.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003cth\u003eTreats (approx.)\u003c\/th\u003e\n\u003cth\u003eCost per litre*\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e000116010504\u003c\/td\u003e\n\u003ctd\u003e160 L\u003c\/td\u003e\n\u003ctd\u003e$0.13 per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e000116010603\u003c\/td\u003e\n\u003ctd\u003e400 L\u003c\/td\u003e\n\u003ctd\u003e7c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e000116010306\u003c\/td\u003e\n\u003ctd\u003e800 L\u003c\/td\u003e\n\u003ctd\u003e6c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e000116010702\u003c\/td\u003e\n\u003ctd\u003e1,600 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e000116010801\u003c\/td\u003e\n\u003ctd\u003e3,200 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e000116010900\u003c\/td\u003e\n\u003ctd\u003e6,400 L\u003c\/td\u003e\n\u003ctd\u003e5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e*Litres treated is calculated from Seachem's published dosing guide (250 mL treats 400 L for several months). It describes how much water the carbon is dosed against, not a guaranteed lifespan — actual replacement timing depends on bioload and flow, and Seachem does not publish a fixed number of months.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003cp\u003eMatch the pack to the water you're running carbon on, not the whole tank volume, if you only run it periodically. A nano tank or a quarantine setup rarely needs more than the 100 mL bottle; a single medium canister filter is usually well served by 250 mL or 500 mL; multi-tank fish rooms and large systems are where the 2 L and 4 L packs earn their lower per-litre cost.\u003c\/p\u003e\n\u003ch3\u003eSetup and use\u003c\/h3\u003e\n\u003cp\u003eRinse the carbon before use to remove any dust from shipping, then place it where flow through the media is highest — a canister filter media basket, a dedicated reactor, a chemical filtration module, or a mesh bag in a box filter, sump or the high-flow section of a trickle filter.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e fresh and saltwater tanks that need water polished — clearing tint, odour and dissolved organics — in canister filters, reactors, sumps and box filters with reasonable flow through the media.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e replacing biological or mechanical filtration — MatrixCarbon is a chemical filtration stage only, and won't process ammonia, nitrite or nitrate, or remove suspended particles. It will also adsorb some medications from the water column, so remove it before dosing a treatment course and don't run it again until the course is finished.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eThere's no fixed replacement calendar — Seachem's guidance is to watch for the signs the carbon is exhausted rather than count weeks. Replace when water discolouration, odour or general organic load starts to return, which is typically after several months of continuous use, sooner in heavily stocked or heavily fed systems.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-tidal-35-hangon-filter-135l\"\u003eSeachem Tidal hang-on filters\u003c\/a\u003e — MatrixCarbon fits neatly into the media basket of the Tidal 35 through 110 range for on-the-fly chemical filtration.\u003c\/li\u003e\n\u003cli\u003eA mechanical filter pad or floss ahead of the carbon, so debris doesn't foul the media before its chemical capacity is used up.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eShips as a standard parcel with no special handling required. Covered by the consumer guarantees under Australian Consumer Law in addition to Seachem's own product guarantee.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow long does a pack of MatrixCarbon actually last?\u003c\/h4\u003e\n\u003cp\u003eSeachem doesn't publish a fixed number of months — treat the \"400 L per 250 mL\" figure as a dosing guide, not a countdown, and replace when clarity, odour control or colour removal starts to fall away.\u003c\/p\u003e\n\u003ch4\u003eCan I use MatrixCarbon in a marine or reef tank?\u003c\/h4\u003e\n\u003cp\u003eYes — Seachem states it's safe for both fresh and saltwater, including reef systems.\u003c\/p\u003e\n\u003ch4\u003eDoes running carbon strip trace elements or medication from my tank?\u003c\/h4\u003e\n\u003cp\u003eIt can adsorb some medications and organics from the water, which is exactly what it's designed to do for waste products. Remove it before starting a medication course and hold off running it again until the course is complete.\u003c\/p\u003e\n\u003ch4\u003eWhich pack size is the best value?\u003c\/h4\u003e\n\u003cp\u003eThe largest packs are the cheapest per litre treated — the 2 L and 4 L bottles both work out to around 5c per litre, against 13c per litre for the 100 mL bottle. Buy the size that matches how much carbon media you actually run, though, rather than the cheapest per-litre figure alone, since unused carbon doesn't keep working once it's exhausted.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244174590243,"sku":null,"price":21.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244174623011,"sku":null,"price":29.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244174655779,"sku":null,"price":49.95,"currency_code":"AUD","in_stock":true},{"title":"1 L","offer_id":55244174688547,"sku":null,"price":85.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244174721315,"sku":null,"price":171.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244174754083,"sku":null,"price":322.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0109-matrixcarbon-4-l_ceb73e6f-e5a2-48bc-8591-6c5ca5a1f006.png?v=1782710725"},{"product_id":"seachem-cuprisorb","title":"Seachem CupriSorb","description":"\u003cp\u003e\u003cstrong\u003eStrips copper from the water and shows when it is spent.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem CupriSorb is a copper-specific chelating resin that pulls copper and other heavy metals out of fresh and marine aquarium water. At the rated 250 mL per 600 L it removes up to 7,500 mg — around 12 ppm — of copper, and the beads darken to deep blue-black once they are loaded. It is regenerable rather than single-use, and it does not release the copper back.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper-specific chelating resin\u003c\/strong\u003e — it targets copper in all its forms rather than adsorbing indiscriminately like carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTells you when it is finished\u003c\/strong\u003e — the beads turn a pronounced deep blue-black, so you are not guessing at a replacement interval.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes not leach copper back\u003c\/strong\u003e — once exhausted it holds what it has captured rather than releasing it into the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegenerable\u003c\/strong\u003e — an acid soak restores it, which changes the economics on the larger sizes if you are equipped to do it safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemoves other heavy metals too\u003c\/strong\u003e — cadmium, iron, nickel, zinc, cobalt and manganese.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour sizes\u003c\/strong\u003e — 100 mL through to a 4 L bulk container.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCapacity by size\u003c\/h3\u003e\n\u003cp\u003eSeachem's published rate is 250 mL for every 600 L, removing up to 7,500 mg (12 ppm) of copper. The other rows below scale that rate directly.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eWater treated at the rated rate\u003c\/th\u003e\n\u003cth\u003eCopper removed, up to\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e100 mL\u003c\/th\u003e\n\u003ctd\u003e240 L\u003c\/td\u003e\n\u003ctd\u003e3,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e250 mL\u003c\/th\u003e\n\u003ctd\u003e600 L\u003c\/td\u003e\n\u003ctd\u003e7,500 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e500 mL\u003c\/th\u003e\n\u003ctd\u003e1,200 L\u003c\/td\u003e\n\u003ctd\u003e15,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e4 L\u003c\/th\u003e\n\u003ctd\u003e9,600 L\u003c\/td\u003e\n\u003ctd\u003e120,000 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThose figures are ceilings, not schedules. Real capacity depends on how much copper is actually present, so the colour change is the reliable indicator rather than elapsed time.\u003c\/p\u003e\n\u003ch3\u003eHow to use it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePlace Seachem CupriSorb in a filter media bag and site it where water flow through the resin is greatest — a canister filter, a chemical filtration module, a box filter, or a high-flow area of a trickle filter.\u003c\/li\u003e\n\u003cli\u003eContact time is everything. Resin sitting in a dead spot does very little.\u003c\/li\u003e\n\u003cli\u003eKeep it running for at least two weeks after copper tests read zero. Substrate and rock can leach copper at levels a test kit will not show, and the resin keeps working on that residue.\u003c\/li\u003e\n\u003cli\u003eWatch the colour. Deep blue-black means it is loaded and needs replacing or regenerating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRegeneration\u003c\/h3\u003e\n\u003cp\u003eCupriSorb can be restored rather than discarded. The procedure uses muriatic acid — hydrochloric acid — which is corrosive. Do it outdoors, in a non-metal container, with gloves and eye protection, or treat the resin as single-use.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eSoak the resin in a non-metal container with 2 cups of water and half a cup of muriatic acid for one hour.\u003c\/li\u003e\n\u003cli\u003eRinse thoroughly.\u003c\/li\u003e\n\u003cli\u003eRepeat as required until the original colour returns.\u003c\/li\u003e\n\u003cli\u003eRinse well, add sodium bicarbonate until foaming stops, then rinse again before returning it to the filter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eCopper-specific chelating resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRemoves\u003c\/th\u003e\n\u003ctd\u003eCopper in all forms, plus cadmium, iron, nickel, zinc, cobalt and manganese\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRated capacity\u003c\/th\u003e\n\u003ctd\u003e250 mL per 600 L, up to 7,500 mg (12 ppm) of copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExhaustion indicator\u003c\/th\u003e\n\u003ctd\u003eBeads turn deep blue-black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLeaches copper back when exhausted\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRegenerable\u003c\/th\u003e\n\u003ctd\u003eYes — muriatic acid soak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContinuous use\u003c\/th\u003e\n\u003ctd\u003eNot recommended — depletes essential trace elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlacement\u003c\/th\u003e\n\u003ctd\u003eMedia bag, in the highest available flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes stocked\u003c\/th\u003e\n\u003ctd\u003e100 mL, 250 mL, 500 mL, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003cp\u003eMatch the size to the system volume, not the severity of the problem, because the rated capacity scales with volume. A 240 L tank is a 100 mL job. A 600 L system is a 250 mL job. Anything up to about 1,200 L takes the 500 mL container.\u003c\/p\u003e\n\u003cp\u003eThe 4 L bucket is a bulk pack for shops, quarantine facilities and large systems. There is also a \u003ca href=\"\/products\/seachem-cuprisorb-100ml-50g-bag\"\u003epre-bagged 100 mL option\u003c\/a\u003e if you would rather not deal with loose resin and a separate media bag.\u003c\/p\u003e\n\u003cp\u003eBuying larger than you need is reasonable here in a way it is not with liquids — dry resin stores well, and the leftover is available the next time a copper treatment finishes.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClearing copper out of a hospital or quarantine tank after a course of copper medication\u003c\/li\u003e\n\u003cli\u003ePreparing a tank that has previously held copper for invertebrates or corals\u003c\/li\u003e\n\u003cli\u003eRemoving heavy metals that have entered through tap water, plumbing or decor\u003c\/li\u003e\n\u003cli\u003eReef systems where any copper at all is a problem\u003c\/li\u003e\n\u003cli\u003eChasing down substrate-bound copper that a test kit is no longer detecting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRunning permanently in a display tank. Seachem does not recommend it as a fixed filter addition, because it will also strip essential trace elements over time.\u003c\/li\u003e\n\u003cli\u003eUse during a deliberate copper treatment — it will remove the medication you are dosing. Run it after the course, not during it.\u003c\/li\u003e\n\u003cli\u003eOrganic pollutants, tannins or yellowing. That is a job for \u003ca href=\"\/products\/seachem-purigen\"\u003ePurigen\u003c\/a\u003e or \u003ca href=\"\/products\/seachem-matrixcarbon\"\u003eMatrixCarbon\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePhosphate or silicate. Use \u003ca href=\"\/products\/seachem-phosguard\"\u003ePhosGuard\u003c\/a\u003e for those.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety and handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRinse the resin before first use and keep it out of reach of children.\u003c\/li\u003e\n\u003cli\u003eRegeneration involves muriatic acid, a corrosive. Gloves, eye protection, a non-metal container and outdoor ventilation are the minimum. Always add acid to water, never water to acid.\u003c\/li\u003e\n\u003cli\u003eNeutralise with sodium bicarbonate until foaming stops before the resin goes back in the tank, and rinse again afterwards.\u003c\/li\u003e\n\u003cli\u003eDo not regenerate in a metal bucket or sink.\u003c\/li\u003e\n\u003cli\u003eSeachem publishes a Safety Data Sheet for this product at sds.seachem.com.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-cuprisorb-100ml-50g-bag\"\u003eSeachem CupriSorb 100 mL pre-bagged\u003c\/a\u003e — the same resin already in a bag, for smaller jobs\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-the-bag-13-x-25cm\"\u003eSeachem The Bag\u003c\/a\u003e — a 13 x 25 cm media bag for the loose sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-zip-bag\"\u003eSeachem Zip Bag\u003c\/a\u003e — resealable media bag for resin you plan to regenerate and reuse\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-purigen\"\u003eSeachem Purigen\u003c\/a\u003e — organic filtration alongside the metal removal\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-prime\"\u003eSeachem Prime\u003c\/a\u003e — conditions tap water and binds heavy metals at each water change\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/seachem-fresh-trace\"\u003eSeachem Fresh Trace\u003c\/a\u003e — replaces the freshwater trace elements a long CupriSorb run will also have stripped\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty, delivery and Australian notes\u003c\/h3\u003e\n\u003cp\u003eThis is a consumable filter medium, so no manufacturer equipment warranty applies. Your rights under the Australian Consumer Law apply in addition to anything the manufacturer states, including the guarantees that goods are of acceptable quality and fit for the purpose described.\u003c\/p\u003e\n\u003cp\u003eThe 100 mL, 250 mL and 500 mL containers ship as ordinary parcels. The 4 L container is a bulk pack and is considerably heavier and bulkier than the others.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow do I know when CupriSorb is used up?\u003c\/h4\u003e\n\u003cp\u003eThe beads discolour to a pronounced deep blue-black. That colour change is the exhaustion indicator, and it is more reliable than counting weeks, because capacity depends on how much copper is actually in the water.\u003c\/p\u003e\n\u003ch4\u003eDoes exhausted CupriSorb release the copper back into the tank?\u003c\/h4\u003e\n\u003cp\u003eNo. Seachem states that CupriSorb does not leach captured copper back once it is exhausted. It should still be removed or regenerated, because a loaded resin is no longer doing anything useful.\u003c\/p\u003e\n\u003ch4\u003eCan CupriSorb stay in the filter permanently?\u003c\/h4\u003e\n\u003cp\u003eSeachem does not recommend it as a permanent filter addition. Left in indefinitely, Seachem CupriSorb will also deplete essential trace elements, so treat it as a corrective medium rather than a standing one.\u003c\/p\u003e\n\u003ch4\u003eWhat else does it remove besides copper?\u003c\/h4\u003e\n\u003cp\u003eCadmium, iron, nickel, zinc, cobalt and manganese are all removed alongside copper, which is worth knowing if you dose iron or trace supplements.\u003c\/p\u003e\n\u003ch4\u003eHow long should it run after copper tests read zero?\u003c\/h4\u003e\n\u003cp\u003eAt least two weeks. Substrate and rock can hold copper that leaches back at concentrations below what a test kit will detect, and the extra fortnight deals with that residue.\u003c\/p\u003e\n\u003ch4\u003eCan it be used while dosing a copper medication?\u003c\/h4\u003e\n\u003cp\u003eNo. It will strip the medication out of the water along with any other copper. Use it after the treatment course is finished, when the goal is getting the copper out.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244184486179,"sku":null,"price":39.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244184518947,"sku":null,"price":65.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244184551715,"sku":null,"price":118.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244184584483,"sku":null,"price":836.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0209-cuprisorb-4-l_0aa257bf-8973-424e-a10a-9bf02fc31621.png?v=1782710765"},{"product_id":"seachem-phosguard","title":"Seachem PhosGuard","description":"\u003cp\u003e\u003cstrong\u003eStrips phosphate and silicate before they feed algae, in fresh or marine water.\u003c\/strong\u003e Seachem PhosGuard is a spherical, high-porosity aluminium oxide (alumina) media that binds phosphate and silicate on contact, run loose in a reactor or filter bag anywhere flow passes through it.\u003c\/p\u003e\n\u003cp\u003ePhosGuard suits reef tanks chasing lower nutrients for coral colour, planted and community freshwater tanks fighting nuisance algae, and any tank on tap water carrying silicate or phosphate. It is not recommended for freshwater aquariums buffered with a phosphate-based pH buffer, since the media will strip the buffer along with the nuisance nutrient.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBead-shaped alumina media\u003c\/strong\u003e — spherical form keeps flow even through a reactor or media bag, instead of channelling around a clump of dust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinds phosphate and silicate together\u003c\/strong\u003e — one media handles both of the nutrients that drive nuisance algae and diatoms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.87 mg phosphate per gram\u003c\/strong\u003e — the working capacity Seachem publishes for PhosGuard's alumina base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh and marine safe\u003c\/strong\u003e — the same media works across both water types, at different dose rates (see Directions).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrom 2.5c per litre treated\u003c\/strong\u003e in the 4 L pack — see the size comparison below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous or intermittent use\u003c\/strong\u003e — leave it running, or dose it in bursts ahead of a livestock introduction or a coral colouring push.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003ctd\u003eAluminium oxide (alumina), spherical beads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinding capacity\u003c\/th\u003e\n\u003ctd\u003e0.87 mg phosphate per gram of media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDose rate\u003c\/th\u003e\n\u003ctd\u003e85 mL per 200 L saltwater, or 85 mL per 400 L freshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and saltwater (not phosphate-buffered freshwater)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003ctd\u003eReactor, canister filter, or media bag in a high-flow area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\n\u003cp\u003ePhosGuard gets cheaper per litre treated the larger the pack — but not evenly. The jump from 100 mL to 500 mL more than halves the cost per litre; past 1 L, the saving per step is smaller.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003cth\u003eTreats (saltwater)\u003c\/th\u003e\n\u003cth\u003eCost per litre treated\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e$21.95\u003c\/td\u003e\n\u003ctd\u003e≈235 L\u003c\/td\u003e\n\u003ctd\u003e9.3c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e$26.95\u003c\/td\u003e\n\u003ctd\u003e≈588 L\u003c\/td\u003e\n\u003ctd\u003e4.5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e$45.95\u003c\/td\u003e\n\u003ctd\u003e≈1,176 L\u003c\/td\u003e\n\u003ctd\u003e3.9c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e$75.95\u003c\/td\u003e\n\u003ctd\u003e≈2,353 L\u003c\/td\u003e\n\u003ctd\u003e3.2c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e$133.95\u003c\/td\u003e\n\u003ctd\u003e≈4,706 L\u003c\/td\u003e\n\u003ctd\u003e2.8c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e$235.95\u003c\/td\u003e\n\u003ctd\u003e≈9,412 L\u003c\/td\u003e\n\u003ctd\u003e2.5c per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFreshwater volumes treated are roughly double the saltwater figures above, since PhosGuard is dosed lighter in freshwater. The litres above use the saltwater dose, the more conservative of the two.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e reef and FOWLR marine tanks, planted and community freshwater tanks, and any system where tap water or feeding is pushing phosphate or silicate up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e freshwater aquariums dosed with a phosphate-based pH buffer — PhosGuard will strip the buffer itself, not just the excess nutrient. Not a substitute for regular water changes or export via protein skimming.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDirections and care\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePre-wet by adding the media to roughly double its volume of fresh water and rinsing before use — it can generate a little heat on first contact with water, which is normal.\u003c\/li\u003e\n\u003cli\u003ePosition it in flow without letting it tumble: a reactor, canister filter media basket, or a filter bag in a high-flow trickle area all work. Tumbling grinds the beads and shortens their working life.\u003c\/li\u003e\n\u003cli\u003eLeave in place for around 4 days, then test phosphate and silicate. If levels haven't dropped to roughly 0.02 mg\/L, the media is exhausted and it's time to replace it; if levels are still falling, leave it running.\u003c\/li\u003e\n\u003cli\u003eCan be run continuously or in short bursts, depending on how hard you're chasing a number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety\u003c\/h3\u003e\n\u003cp\u003ePhosGuard can generate mild heat on first contact with water during pre-wetting — this is expected, not a fault. It is not a medication and carries no livestock warnings beyond the phosphate-buffer note above.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA phosphate and silicate test kit\u003c\/strong\u003e — to know when the media is exhausted rather than guessing on a calendar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA media reactor or filter bag\u003c\/strong\u003e — for the even flow the beads need to work without tumbling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeachem PhosNet\u003c\/strong\u003e — a higher-capacity synthetic GFO alternative where a smaller footprint or heavier phosphate load is the priority.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Seachem's standard quality guarantee in addition to your rights under Australian Consumer Law. Standard shipping applies to all pack sizes; no cold chain or dangerous goods handling required.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow long does one dose of PhosGuard last?\u003c\/h4\u003e\n\u003cp\u003eThere's no fixed timeframe — it depends on how much phosphate and silicate is entering the tank. Start checking at around 4 days and replace once test readings stop dropping.\u003c\/p\u003e\n\u003ch4\u003eCan I run PhosGuard and carbon in the same reactor?\u003c\/h4\u003e\n\u003cp\u003eYes, though many aquarists run them in separate chambers or bags so each media gets even flow rather than competing for contact time.\u003c\/p\u003e\n\u003ch4\u003eWill PhosGuard affect my freshwater pH buffer?\u003c\/h4\u003e\n\u003cp\u003eIf your buffer is phosphate-based, yes — PhosGuard will strip it along with any excess phosphate. That's why it's not recommended for phosphate-buffered freshwater setups.\u003c\/p\u003e\n\u003ch4\u003eIs PhosGuard reef safe?\u003c\/h4\u003e\n\u003cp\u003eYes, it's widely used in reef tanks specifically to keep phosphate and silicate low for coral colour and to limit nuisance algae.\u003c\/p\u003e\n\u003ch4\u003eDo I need a reactor, or can I just drop it in the filter?\u003c\/h4\u003e\n\u003cp\u003eA reactor or filter bag in a high-flow area both work. What matters is that the media sits in flow without tumbling — loose in an open sump is the one placement to avoid.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244184715555,"sku":null,"price":21.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244184748323,"sku":null,"price":26.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244184781091,"sku":null,"price":45.95,"currency_code":"AUD","in_stock":true},{"title":"1 L","offer_id":55244184813859,"sku":null,"price":75.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244184846627,"sku":null,"price":133.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244184879395,"sku":null,"price":235.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0189-phosguard-4-l_cc408caf-7f88-4f65-a837-ce42ad64e408.png?v=1782710765"},{"product_id":"seachem-de-nitrate","title":"Seachem de*nitrate","description":"\u003cp\u003e\u003cstrong\u003eBiological media that reduces nitrate without water changes alone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSeachem de*nitrate is a porous, aragonite-based bio-media that hosts anaerobic denitrifying bacteria deep within its structure. Aerobic bacteria colonise the outer surface while anaerobic bacteria establish in the low-oxygen core, converting nitrate into nitrogen gas that escapes harmlessly from the aquarium. It suits both freshwater and marine systems and is run in a reactor, media bag or low-flow filter chamber.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePorous, dual-zone structure\u003c\/strong\u003e — aerobic nitrification at the surface, anaerobic denitrification at the core.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces nitrate biologically\u003c\/strong\u003e — converts nitrate to nitrogen gas rather than simply adsorbing it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo regular replacement needed\u003c\/strong\u003e — unlike chemical media, de*nitrate does not need to be swapped out on a schedule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and marine use\u003c\/strong\u003e — suits both system types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns in a reactor, media bag or chamber\u003c\/strong\u003e — flexible placement in canister filters, sumps, drip trays or dedicated reactors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-term biological filtration\u003c\/strong\u003e — doubles as standard biological media in addition to its denitrifying role.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSeachem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eAragonite-based porous denitrifying bio-media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow requirement\u003c\/td\u003e\n\u003ctd\u003eBelow 200 L\/h (50 US gal\/h) through the media for anaerobic denitrification; above roughly 380 L\/h (100 US gal\/h) it functions as an aerobic filter media only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSizes available\u003c\/td\u003e\n\u003ctd\u003e100 mL, 250 mL, 500 mL, 1 L, 2 L, 4 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eVariant specifications\u003c\/h3\u003e\n\u003cp\u003eSeachem states that 500 mL of de*nitrate treats approximately 100–200 L (25–50 US gallons), depending on starting nitrate level and bioload. The figures below are calculated pro-rata from that published guidance and are approximate.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eApprox. water treated (pro-rata)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 mL\u003c\/td\u003e\n\u003ctd\u003e20–40 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e250 mL\u003c\/td\u003e\n\u003ctd\u003e50–100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 mL\u003c\/td\u003e\n\u003ctd\u003e100–200 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003ctd\u003e200–400 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 L\u003c\/td\u003e\n\u003ctd\u003e400–800 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 L\u003c\/td\u003e\n\u003ctd\u003e800–1,600 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSetup and use\u003c\/h3\u003e\n\u003cp\u003ePlace de*nitrate in a canister filter, chemical filtration module, box filter, sump, drip tray or dedicated media reactor. Flow through the media must stay below 200 L\/h (50 US gal\/h) for the anaerobic core to establish and denitrify; above about 380 L\/h (100 US gal\/h) it will only work as an aerobic biological media. Allow several days for nitrate to begin falling, typically levelling off around 4–5 mg\/L. If starting nitrate is above 20 mg\/L, bring it down with water changes first before relying on de*nitrate to maintain it.\u003c\/p\u003e\n\u003ch3\u003eSuitable for \/ not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for freshwater and marine aquariums running a reactor, media bag or low-flow filter chamber.\u003c\/li\u003e\n\u003cli\u003eNot effective as a denitrator in high-flow filter setups — above roughly 380 L\/h through the media it will only provide aerobic filtration, not nitrate reduction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDoes not need to be replaced or regenerated on a fixed schedule, unlike chemical filter media.\u003c\/li\u003e\n\u003cli\u003eWorks best as the primary media in its own reactor or bag, alongside a sponge pre-filter to keep debris out.\u003c\/li\u003e\n\u003cli\u003eCompatible for use alongside other Seachem media — Matrix, Purigen, MatrixCarbon, PhosGuard, PhosBond, SeaGel, HyperSorb, CupriSorb and ZeoLite — provided each runs in its own dedicated media bag or chamber.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty, support and Australian notes\u003c\/h3\u003e\n\u003cp\u003eAll statutory consumer guarantees under the Australian Consumer Law apply to this product in addition to any rights arising from your purchase.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow much de*nitrate do I need?\u003c\/h4\u003e\n\u003cp\u003eSeachem's published guidance is approximately 100–200 L (25–50 US gallons) treated per 500 mL of media, depending on starting nitrate level and bioload.\u003c\/p\u003e\n\u003ch4\u003eDoes de*nitrate work in a high-flow canister filter?\u003c\/h4\u003e\n\u003cp\u003eNot for denitrification. Flow through the media needs to stay below 200 L\/h for the anaerobic core to establish; above roughly 380 L\/h it functions only as an aerobic biological media, not a nitrate reducer.\u003c\/p\u003e\n\u003ch4\u003eHow long until nitrate starts dropping?\u003c\/h4\u003e\n\u003cp\u003eSeachem notes nitrate typically begins falling within several days of setup and levels off around 4–5 mg\/L. If your starting nitrate is above 20 mg\/L, reduce it with water changes first.\u003c\/p\u003e\n\u003ch4\u003eDoes de*nitrate need to be replaced?\u003c\/h4\u003e\n\u003cp\u003eNo. Unlike chemical filter media, it does not need scheduled replacement or regeneration.\u003c\/p\u003e\n\u003ch4\u003eIs it safe to use with other Seachem filter media?\u003c\/h4\u003e\n\u003cp\u003eYes, provided each media type runs in its own dedicated bag or chamber. Seachem confirms compatibility with Matrix, Purigen, MatrixCarbon, PhosGuard, PhosBond, SeaGel, HyperSorb, CupriSorb and ZeoLite.\u003c\/p\u003e\n\u003ch4\u003eIs de*nitrate suitable for marine tanks?\u003c\/h4\u003e\n\u003cp\u003eYes, it is suited to both freshwater and marine aquariums.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"100 mL","offer_id":55244187500835,"sku":null,"price":11.95,"currency_code":"AUD","in_stock":true},{"title":"250 mL","offer_id":55244187533603,"sku":null,"price":15.95,"currency_code":"AUD","in_stock":true},{"title":"500 mL","offer_id":55244187566371,"sku":null,"price":27.95,"currency_code":"AUD","in_stock":true},{"title":"1 L","offer_id":55244187599139,"sku":null,"price":49.95,"currency_code":"AUD","in_stock":true},{"title":"2 L","offer_id":55244187631907,"sku":null,"price":86.95,"currency_code":"AUD","in_stock":true},{"title":"4 L","offer_id":55244187664675,"sku":null,"price":135.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/0960-mt-nitrite__nitrate-scaled_186f8c5c-8e7e-4f5b-88d0-d0bfcacb7ae1.png?v=1782710765"},{"product_id":"bioscape-premium-carbon-pouches","title":"Bioscape Premium Carbon Pouches","description":"\u003cp\u003e\u003cstrong\u003eDrop-in carbon pouches that pull odour, tannins and discolouration out of the water column.\u003c\/strong\u003e Bioscape Premium Carbon Pouches are pre-bagged nets of activated carbon that sit directly in a filter's flow, chemically stripping the compounds a mechanical pad and a biological media stage can't touch — tannins, medication residue, food dyes and the yellow tint that builds up between water changes. They're sold in 500 g, 750 g and 1000 g packs, each supplied as multiple 250 g nets.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActivated carbon core\u003c\/strong\u003e — high-surface-area carbon adsorbs dissolved organics, tannins and odour-causing compounds that filter floss and biological media pass straight through.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-bagged, drop-in format\u003c\/strong\u003e — each pouch is a sealed mesh net, so there's no loose carbon to measure or rinse before it goes in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits most filter types\u003c\/strong\u003e — sized to sit in canister filter media baskets, power filter chemical compartments, trickle towers and sumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacked in 250 g nets\u003c\/strong\u003e — the 500 g pack is two nets; Bioscape doesn't publish the exact net count for the 750 g and 1000 g packs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemically inert carrier\u003c\/strong\u003e — the carbon itself doesn't alter pH or hardness, so it can be added or removed without disturbing water chemistry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eMedia type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e500 g\u003c\/td\u003e\n\u003ctd\u003e2 x 250 g pouches\u003c\/td\u003e\n\u003ctd\u003eActivated carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e750 g\u003c\/td\u003e\n\u003ctd\u003e250 g pouches (exact net count not published by Bioscape)\u003c\/td\u003e\n\u003ctd\u003eActivated carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 g\u003c\/td\u003e\n\u003ctd\u003e250 g pouches (exact net count not published by Bioscape)\u003c\/td\u003e\n\u003ctd\u003eActivated carbon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWill it fit my setup?\u003c\/h3\u003e\n\u003cp\u003eThis is a media choice rather than a size-matched part, so it isn't fitted to one specific canister or hang-on model. Each 250 g pouch is roughly fist-sized. If your filter has a dedicated chemical media stage or basket, that's the spot for it; otherwise sit it in the main flow, downstream of the mechanical media.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for polishing water in freshwater and saltwater systems, clearing tannin staining, and pulling residual medication out of the water once a treatment course has finished. Activated carbon is chemically inert and commonly run in both fresh and marine setups.\u003c\/p\u003e\n\u003cp\u003eNot suitable as the only stage of filtration — it needs mechanical and biological media alongside it — and not suitable to leave in place indefinitely. Once the carbon's surface is saturated it stops adsorbing and can, in theory, start releasing compounds back into the water.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eBioscape doesn't publish a fixed replacement interval for this pack. The sign to watch for is the carbon losing its polishing effect — water that was crystal-clear starts looking dull or faintly tinted again, which means the media is exhausted rather than still working. In a heavily stocked or heavily dosed tank that can happen within weeks; in a lightly stocked tank it will run longer. Replace the whole pouch rather than topping it up.\u003c\/p\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered against manufacturing and packaging defects under Bioscape's warranty, in addition to your rights under Australian Consumer Law. Ships by standard parcel post.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eCan I rinse and reuse a carbon pouch?\u003c\/h4\u003e\n\u003cp\u003eNo. Once the carbon's surface is saturated with adsorbed compounds it stops working, and rinsing won't reactivate it. Replace the pouch.\u003c\/p\u003e\n\u003ch4\u003eWill it remove medication from my tank?\u003c\/h4\u003e\n\u003cp\u003eYes — activated carbon is the standard way to strip residual medication from the water once a treatment course is finished. Run it after dosing, not during, since it will also pull out the medication you're trying to dose.\u003c\/p\u003e\n\u003ch4\u003eDoes it affect pH or water hardness?\u003c\/h4\u003e\n\u003cp\u003eNo. Activated carbon is chemically inert with respect to pH and hardness — it only adsorbs dissolved organic compounds.\u003c\/p\u003e\n\u003ch4\u003eWhich pack size should I buy?\u003c\/h4\u003e\n\u003cp\u003eLarger tanks and sumps push more water through the media basket and get through carbon faster, so the 750 g and 1000 g packs suit bigger systems or anyone who'd rather restock less often. A single 500 g pack is enough for a nano to mid-size tank running one media stage.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"500 g","offer_id":55249199628579,"sku":null,"price":16.95,"currency_code":"AUD","in_stock":true},{"title":"750 g","offer_id":55249199661347,"sku":"BIS148","price":25.95,"currency_code":"AUD","in_stock":true},{"title":"1000 g","offer_id":55249199694115,"sku":"BIS149","price":32.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS147_1.jpg?v=1772087857"},{"product_id":"continuum-captiv-phos-fe","title":"Continuum Captiv Phos Fe","description":"\u003cp\u003e\u003cstrong\u003eContinuum Captiv Phos Fe pulls phosphate and silicate out of reef and freshwater tanks without dyes or algaecides.\u003c\/strong\u003e It's a granular ferric oxide (GFO) media designed to run in a reactor or filter bag, stripping dissolved phosphate down to trace levels so it stops feeding nuisance algae and diatoms. Continuum rates it to bring phosphate down to 0.04 mg\/L or lower, and it's safe across marine, reef and freshwater systems.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFerric oxide media\u003c\/strong\u003e — targets dissolved phosphate and silicate without algaecides or dyes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReef-safe formulation\u003c\/strong\u003e — Continuum states it will not harm marine or freshwater life at the recommended dose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo pack sizes\u003c\/strong\u003e — 300 g for smaller systems, 1.2 kg for larger reactors or bigger tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns in a reactor or bag\u003c\/strong\u003e — loose-fill in a polyester filter bag or chamber, or run in a fluidised bed filter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eGranular ferric oxide (GFO) phosphate and silicate remover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive constituent\u003c\/th\u003e\n\u003ctd\u003eContinuum describes this as a proprietary activated ferric oxide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget phosphate level\u003c\/th\u003e\n\u003ctd\u003e0.04 mg\/L (ppm) or lower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended dose\u003c\/th\u003e\n\u003ctd\u003eApprox. 1 g per US gallon (3.8 L), or roughly ⅓ cup per 100 US gallons (400 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitability\u003c\/th\u003e\n\u003ctd\u003eMarine, reef and freshwater aquaria\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack sizes\u003c\/th\u003e\n\u003ctd\u003e300 g, 1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003ch4\u003eHow much do I use?\u003c\/h4\u003e\u003cp\u003eContinuum recommends roughly 1 g of Captiv Phos Fe per US gallon (3.8 L) of system water, or about one-third of a cup per 100 US gallons (400 L). Run it until phosphate reads 0.04 mg\/L or lower.\u003c\/p\u003e\u003ch4\u003eHow do I run it?\u003c\/h4\u003e\u003cp\u003eRinse the media thoroughly in cold filtered or RO\/DI water before use — it ships dry and dusty. Place it loosely in a polyester filter bag or media chamber where flow can pass gently through it, or run it in a fluidised bed filter. Continuum recommends a particulate pre-filter, such as filter floss or a fine sponge, ahead of the media to stop it clogging with detritus.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e marine, reef and freshwater aquaria running high phosphate or silicate, including systems battling diatoms or nuisance algae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e dosing directly into the water column — this is a media, not a liquid treatment, and needs flow through a bag, reactor or fluidised bed to work.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eWatch phosphate readings rather than the calendar. Continuum's guidance is to replace the media once phosphate starts climbing again, which will happen sooner in heavily stocked or heavily fed systems than in lightly stocked ones.\u003c\/p\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eKeep out of reach of children and away from pets. Not for human consumption. If the media is swallowed, drink water; if it contacts eyes, flush with water.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSold with Continuum's standard packaging warranty against manufacturing defects, in addition to the consumer guarantees you're entitled to under Australian Consumer Law. Ships from Nick's Aquarium Oceanarium Terrarium in Brisbane \/ North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this remove silicate as well as phosphate?\u003c\/h4\u003e\u003cp\u003eYes — Continuum states Captiv Phos Fe removes both dissolved phosphate and silicate, which is useful where diatoms rather than green algae are the main complaint.\u003c\/p\u003e\u003ch4\u003eDo I need to rinse it before use?\u003c\/h4\u003e\u003cp\u003eYes. Rinse thoroughly in cold filtered or RO\/DI water first — unrinsed media can cloud the tank with fine dust.\u003c\/p\u003e\u003ch4\u003eCan I dose it straight into the tank?\u003c\/h4\u003e\u003cp\u003eNo. It needs water to flow through it in a bag, reactor or fluidised bed filter — it isn't a liquid dose.\u003c\/p\u003e\u003ch4\u003eIs it safe with my invertebrates?\u003c\/h4\u003e\u003cp\u003eContinuum states the product is formulated to be safe for marine and freshwater life at the recommended dose, without algaecides or dyes.\u003c\/p\u003e","brand":"Continuum","offers":[{"title":"300 g","offer_id":55249697603875,"sku":null,"price":44.95,"currency_code":"AUD","in_stock":true},{"title":"1.2 kg","offer_id":55249697636643,"sku":null,"price":153.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/qcpfe300_1778815184.jpg?v=1782710627"},{"product_id":"red-sea-nanomat-fleece-roll-2-in-pack","title":"Red Sea NanoMat Fleece Roll (2 In Pack)","description":"\u003cp\u003e\u003cstrong\u003eThe genuine Red Sea fleece refill for the NanoMat roller filter, two rolls of the same 50gsm polyester media the unit ships with.\u003c\/strong\u003e Keep a spare pack handy so you are never caught mid-roll.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Red Sea media\u003c\/strong\u003e — same 50gsm non-woven polyester fleece fitted from new, so filtration stays consistent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-flow, skimmer-friendly weave\u003c\/strong\u003e — traps fine particulate without choking flow or stripping proteins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo rolls per pack\u003c\/strong\u003e — covers a couple of roll changes before reordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003ctd\u003e5.5cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll length\u003c\/th\u003e\n\u003ctd\u003e18m per roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e50gsm non-woven polyester fleece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e2 rolls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWill it fit my NanoMat?\u003c\/h3\u003e\n\u003cp\u003eYes. This roll is sized for the Red Sea NanoMat, the compact roller that fits a standard 4 inch filter sock holder or the rear sump of MAX NANO G2 and REEFER G2 systems. It does not fit the larger ReefMat 250, 500 or 1200, which use wider rolls (8cm, 11.3cm and 17cm). If listed here as the \"Nano ReefMat Fleece Roll\", that is an earlier name for the same NanoMat roll.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cp\u003eTwo rolls of NanoMat fleece media.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e the NanoMat unit, take-up spool or power supply.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRoll life depends on bioload and feeding, from a few weeks to over a month, so keep a spare pack on hand. Store rolls dry and out of direct sunlight.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill this fit a ReefMat 250, 500 or 1200?\u003c\/h4\u003e\n\u003cp\u003eNo. Those units use wider rolls and need a different refill.\u003c\/p\u003e\n\u003ch4\u003eIs this the same as the \"Nano ReefMat\" roll sold elsewhere on this site?\u003c\/h4\u003e\n\u003cp\u003eYes. \"Nano ReefMat\" is an earlier name for the NanoMat, and the fleece roll is the same product.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default","offer_id":55269638930723,"sku":null,"price":32.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/file_0f57084d-b76f-4baa-895c-ad09673f2386.png?v=1782301900"},{"product_id":"aqua-medic-antiphos-fe-500g-800ml","title":"Aqua Medic Antiphos Fe 500g\/800ml","description":"\u003cp\u003e\u003cstrong\u003e500 g of iron-based GFO, sized for a 300 L system.\u003c\/strong\u003e This is the 500 g (approximately 800 mL by volume) pack of Aqua Medic Antiphos Fe, an aluminium-free iron hydroxide media that binds phosphate and silicate to starve nuisance and diatom algae. It suits both freshwater and marine set-ups, including reef tanks carrying corals and invertebrates.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinds phosphate and silicate\u003c\/strong\u003e — removes the nutrients nuisance algae rely on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium-free\u003c\/strong\u003e — iron hydroxide chemistry, not an aluminium oxide media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated for a 300 L system\u003c\/strong\u003e — under normal bioload, for roughly three to six months.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh or marine safe\u003c\/strong\u003e — suits reef, FOWLR, planted and community systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eApprox. volume\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e500 g\u003c\/td\u003e\n\u003ctd\u003e800 mL\u003c\/td\u003e\n\u003ctd\u003eAB11651\u003c\/td\u003e\n\u003ctd\u003e4025901142423\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eSetting it up\u003c\/h3\u003e\u003cp\u003eRinse before use. Run in a fluidised reactor for best contact, or a mesh filter bag in good flow if you do not run a reactor. Test phosphate on a schedule and replace once the reading plateaus rather than waiting for it to climb back up.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cp\u003eSuitable for phosphate- or silicate-driven algae in freshwater and marine systems up to roughly 300 L at normal bioload. Larger or heavily stocked systems will exhaust this pack faster — for those, see the 1000 g Antiphos Fe pack.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by the manufacturer's standard shelf-life guarantee, in addition to your rights under Australian Consumer Law. Ships standard parcel from North Lakes, QLD.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow long does 500 g actually last?\u003c\/h4\u003e\u003cp\u003eAqua Medic rates it for a 300 L aquarium under normal bioload for roughly three to six months — heavier feeding or stocking will shorten that.\u003c\/p\u003e\u003ch4\u003eCan I mix it with carbon in the same reactor?\u003c\/h4\u003e\u003cp\u003eRun them in separate chambers or reactors where possible — it keeps contact time and flow correct for each media rather than one starving the other of flow.\u003c\/p\u003e\u003ch4\u003eIs it safe for shrimp and other invertebrates?\u003c\/h4\u003e\u003cp\u003eYes, when rinsed and run as directed. It does not add anything harmful to the water column — it is binding phosphate and silicate onto the media itself.\u003c\/p\u003e","brand":"Aqua Medic","offers":[{"title":"Default Title","offer_id":55285029536035,"sku":"AB11651","price":42.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/AB11651.jpg?v=1786073127"},{"product_id":"aqua-medic-np-biograin-700g-1000ml","title":"Aqua Medic NP Biograin 700g\/1000ml","description":"\u003cp\u003e\u003cstrong\u003eFeeds the bacteria that pull nitrate and phosphate out of your water.\u003c\/strong\u003e Aqua Medic NP Biograin is a 700 g (1000 mL) pack of biodegradable organic granules for fluidized bed reactors, such as the Aqua Medic Multi Reactor, that colonise with bacteria to break down nitrate (NO3) and phosphate (PO4) in marine and reef aquariums. Dosed from 50 mL per 100 L as a starting point, one pack treats a genuinely useful volume of tank water.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacterial substrate, not a chemical scrubber\u003c\/strong\u003e — the granules give nitrate- and phosphate-reducing bacteria surface area to colonise, so nutrient export continues as long as the reactor is running.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosed to your bioload\u003c\/strong\u003e — start at 50 mL per 100 L and increase gradually to a maximum of 200 mL per 100 L for heavily stocked systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% biodegradable granules\u003c\/strong\u003e — fine granulation, optimised for maximum bacterial surface area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAs low as 4c per litre treated\u003c\/strong\u003e — at the standard starting dose (50 mL per 100 L) this 1 L pack treats up to 2,000 L of tank water; even at the heaviest recommended dose (200 mL per 100 L) it still works out to $0.19 per litre.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeeds the reef, not just the skimmer cup\u003c\/strong\u003e — the bacterial biomass this process produces needs strong skimming to export it, and some of it also becomes food for corals and other filter feeders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack size\u003c\/td\u003e\n\u003ctd\u003e700 g \/ 1000 mL (1 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBiodegradable organic granules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFluidized bed reactor (e.g. Aqua Medic Multi Reactor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eBacterial substrate for NO3 and PO4 reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard dose\u003c\/td\u003e\n\u003ctd\u003e50 mL per 100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum dose\u003c\/td\u003e\n\u003ctd\u003e200 mL per 100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCost per litre treated\u003c\/td\u003e\n\u003ctd\u003e4c (standard dose) to $0.19 (maximum dose)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eAB12800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eStart at 50 mL of NP Biograin per 100 L of aquarium water in your fluidized bed reactor. Give it time to colonise and let nitrate and phosphate respond before judging results — bacterial substrates work over days and weeks, not hours. If NO3 or PO4 stay higher than you want, increase the dose in steps, retesting between increases, up to Aqua Medic's stated maximum of 200 mL per 100 L.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for marine and reef aquariums running, or adding, a fluidized bed reactor to bring down nitrate and phosphate. Aqua Medic markets NP Biograin specifically for saltwater aquaria; we have not found manufacturer guidance confirming freshwater use.\u003c\/p\u003e\n\u003cp\u003eNot suitable as a stand-alone fix without adequate skimming — the bacterial biomass it produces needs to be exported by the skimmer, or nutrient reduction stalls.\u003c\/p\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRun vigorous protein skimming alongside the reactor to export the biomass the bacteria produce — this is what actually removes the nitrogen and phosphorus from the system, rather than just converting it. Monitor NO3 and PO4 with a test kit and adjust the dose within the 50–200 mL per 100 L range accordingly. Aqua Medic does not publish a fixed replacement interval for the granules; top up or replace as the volume in the reactor visibly depletes.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by your rights under Australian Consumer Law. Standard delivery applies.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eHow much NP Biograin do I need to start?\u003c\/h4\u003e\n\u003cp\u003eBegin at 50 mL per 100 L of aquarium water in your fluidized bed reactor, then reassess after your nitrate and phosphate have had time to respond.\u003c\/p\u003e\n\u003ch4\u003eCan I increase the dose if my nitrate and phosphate stay high?\u003c\/h4\u003e\n\u003cp\u003eYes. Aqua Medic rates NP Biograin up to 200 mL per 100 L for heavier bioloads, but increase gradually and retest rather than jumping straight to the maximum.\u003c\/p\u003e\n\u003ch4\u003eDo I need a specific reactor to use this?\u003c\/h4\u003e\n\u003cp\u003eIt is designed for fluidized bed reactors, such as the Aqua Medic Multi Reactor, where water flow keeps the granules suspended and gives bacteria constant contact with fresh water.\u003c\/p\u003e\n\u003ch4\u003eWhy does my skimmer need to work harder after adding this?\u003c\/h4\u003e\n\u003cp\u003eThe bacteria colonising the granules convert dissolved nitrate and phosphate into biomass, and that biomass needs to be exported. Vigorous skimming is how it leaves the system, rather than breaking back down into the nutrients you started with.\u003c\/p\u003e\n\u003ch4\u003eIs this safe for a freshwater tank?\u003c\/h4\u003e\n\u003cp\u003eAqua Medic markets NP Biograin specifically for saltwater aquaria. We have not found manufacturer guidance confirming freshwater use, so treat it as a marine\/reef product until Aqua Medic states otherwise.\u003c\/p\u003e","brand":"Aqua Medic","offers":[{"title":"Default Title","offer_id":55285029699875,"sku":"AB12800","price":97.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/AB12800.jpg?v=1786073128"},{"product_id":"aqua-medic-ocean-clear-fleece-roll","title":"Aqua Medic Ocean Clear Fleece Roll","description":"\u003cp\u003e\u003cstrong\u003eGenuine replacement fleece keeps mechanical filtration running without a full rebuild.\u003c\/strong\u003e This is the genuine replacement fleece roll for the Aqua Medic Ocean Clear filter — a 40 m length of 100 mm wide polypropylene fleece that loads directly into the unit's roll cassette. Keep a spare on hand so a clogged roll never leaves the filter without fresh media mid-cycle.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect fit\u003c\/strong\u003e — sized specifically for the Ocean Clear cassette, no cutting or reshaping needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 m roll\u003c\/strong\u003e — the same length as the roll pre-loaded in a new Ocean Clear unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 mm width\u003c\/strong\u003e — matched to the Ocean Clear's fleece channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolypropylene fleece\u003c\/strong\u003e — mechanically filters particulate without swelling or breaking down in salt or fresh water.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFits model\u003c\/th\u003e\n\u003ctd\u003eAqua Medic Ocean Clear Fleece Roll Filter (AM408010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll length\u003c\/th\u003e\n\u003ctd\u003e40 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoll width\u003c\/th\u003e\n\u003ctd\u003e100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhat's included \/ What you'll still need\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e one 40 m x 100 mm fleece roll.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou'll still need:\u003c\/strong\u003e the Aqua Medic Ocean Clear filter unit itself — this roll is media only and doesn't include the housing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e the Aqua Medic Ocean Clear fleece roll filter only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e other brands' roller filters — check your unit's fleece channel width before ordering, as roller filters aren't a universal fit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eFit a new roll once the current one is exhausted or fouled. Because how fast a roll advances depends on bioload and any pre-filtration ahead of the unit, we'd rather you keep a spare in stock than rely on a fixed replacement interval.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAqua Medic Ocean Clear Fleece Roll Filter — the unit this roll fits.\u003c\/li\u003e\n\u003cli\u003eAqua Medic DC Runner 800 or 1000 — for pressurised, non-gravity installs of the Ocean Clear.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eAs a consumable filter media, this isn't covered against normal wear, though your rights under Australian Consumer Law apply if the roll is faulty. Standard freight.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eDoes this fit any roller filter, or just the Aqua Medic Ocean Clear?\u003c\/h4\u003e\u003cp\u003eIt's cut to 100 mm wide specifically for the Ocean Clear's cassette. Other brands' roller filters use different widths, so check your unit before ordering.\u003c\/p\u003e\u003ch4\u003eHow long does one roll last?\u003c\/h4\u003e\u003cp\u003eThat depends on bioload and any pre-filtration ahead of the unit — heavier stocking advances the roll faster. Keep a spare on hand rather than waiting for the roll to run out mid-cycle.\u003c\/p\u003e\u003ch4\u003eWhat is the fleece made from?\u003c\/h4\u003e\u003cp\u003ePolypropylene, the same material used in the roll that ships pre-loaded in a new Ocean Clear filter.\u003c\/p\u003e\u003ch4\u003eCan I cut the roll to fit a different width?\u003c\/h4\u003e\u003cp\u003eWe wouldn't recommend it — a narrower cut can leave gaps at the cassette edges that let unfiltered water bypass the fleece.\u003c\/p\u003e","brand":"Aqua Medic","offers":[{"title":"Default Title","offer_id":55285033271587,"sku":"AM408011","price":32.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/12295_ocean-clear-fleeceroll-rolle.png?v=1786066026"},{"product_id":"aqua-medic-reef-life-hydrocarbonate-3-5mm-1ltr","title":"Aqua Medic Reef Life Hydrocarbonate 3-5mm 1ltr","description":"\u003cp\u003e\u003cstrong\u003eFeeds calcium and alkalinity back into a reef tank as CO2 slowly dissolves it.\u003c\/strong\u003e Aqua Medic Reef Life Hydrocarbonate is a pure calcium carbonate media in a 3–5 mm (medium) grain, sized for use in a CO2-fed calcium reactor. As CO2 passes through the reactor chamber it lowers the pH inside, and the acidified water dissolves the media into calcium bicarbonate — which is what actually replaces the calcium and carbonate hardness a reef consumes.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure calcium carbonate\u003c\/strong\u003e — no binders or fillers, so what dissolves is what's stated: calcium, carbon and oxygen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3–5 mm medium grain\u003c\/strong\u003e — a middle ground between fine grades (faster dissolving, more prone to channelling and compaction) and coarse grades (slower, longer bed life). Matches the media size most calcium reactor manufacturers specify as their default fill.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores calcium and alkalinity together\u003c\/strong\u003e — a calcium reactor addresses both parameters from one media, rather than dosing them separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso usable outside a calcium reactor\u003c\/strong\u003e — as a calcite (KH-buffering) filter media, or as a substrate component in marine and African cichlid tanks, where its buffering effect on pH is useful rather than incidental.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003ePure calcium carbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrain size\u003c\/th\u003e\n\u003ctd\u003e3–5 mm (medium)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e1 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary use\u003c\/th\u003e\n\u003ctd\u003eCO2-fed calcium reactor media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOther uses\u003c\/th\u003e\n\u003ctd\u003eCalcite filter media; substrate additive for marine and African cichlid tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eMarine \/ reef\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDosage and directions\u003c\/h3\u003e\u003cp\u003eFill the calcium reactor chamber with media per the reactor manufacturer's instructions, then run CO2 into the chamber to bring the internal pH down until the media begins dissolving. Effluent pH and drip rate are adjusted to match the tank's calcium and alkalinity consumption, not to a fixed schedule — a higher bioload or faster coral growth draws the media down faster.\u003c\/p\u003e\u003ch3\u003eHow long does a litre last?\u003c\/h3\u003e\u003cp\u003eAqua Medic does not publish a fixed \"treats X litres\" figure for this media, and that's genuinely because there isn't one: consumption is driven by your tank's calcium and alkalinity demand and your reactor's effluent rate, not by a dose ratio to system volume the way a salt mix or liquid additive is. As a rough planning guide, a lightly stocked reef draws down a reactor chamber far more slowly than an SPS-heavy, fast-growing system — track your Ca and KH test results rather than the calendar.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e any CO2-fed calcium reactor sized to take loose media in this grain range; marine and reef systems needing ongoing calcium and alkalinity replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e freshwater planted tanks wanting to avoid raised hardness — this media will buffer pH upward and add hardness, which is the opposite of what most planted setups want.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eTop up or replace media once the bed visibly reduces in volume or Ca\/KH readings drift down despite normal reactor operation. Rinse new media isn't required before use.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eSold as a consumable reactor media; standard freight, no special handling required.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eDoes this replace dosing calcium and alkalinity separately?\u003c\/h4\u003e\u003cp\u003eIn a working calcium reactor, yes — the dissolving media supplies both, which is the main reason reactors are used over two-part or all-in-one liquid dosing on larger or heavily stocked systems.\u003c\/p\u003e\u003ch4\u003eCan I use the fine or coarse grade instead?\u003c\/h4\u003e\u003cp\u003eThis is the 3–5 mm medium grade. Aqua Medic also sells fine and coarse grades separately — finer grades dissolve faster but compact more readily, coarser grades last longer between top-ups but dissolve more slowly.\u003c\/p\u003e\u003ch4\u003eWill it affect my tank's pH outside the reactor?\u003c\/h4\u003e\u003cp\u003eOnly via the effluent it produces, which is intentionally lower in pH inside the reactor and raises the tank's alkalinity and calcium once mixed in — it does not lower display tank pH when the reactor is running correctly.\u003c\/p\u003e","brand":"Aqua Medic","offers":[{"title":"Default Title","offer_id":55285033697571,"sku":"AM410912","price":48.95,"currency_code":"AUD","in_stock":false}]},{"product_id":"bioscape-premium-coarse-filter-wool-blue-32-x-12-x-02cm-sheets-3-pack","title":"Bioscape Premium Coarse Filter Wool Blue 32 x 12 x 02cm Sheets 3 Pack","description":null,"brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55293053763875,"sku":"BIS195","price":13.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS195_1.jpg?v=1782870106"},{"product_id":"bioscape-premium-fine-filter-wool-32-x-12-x-02cm-sheets-6-pack","title":"Bioscape Premium Fine Filter Wool 32 x 12 x 02cm Sheets 6 Pack","description":null,"brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55293053796643,"sku":"BIS194","price":10.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS194_1.jpg?v=1782870106"},{"product_id":"bioscape-premium-bio-cylinder-filter-medium-500gm","title":"Bioscape Premium Bio-Cylinder Filter Medium 500gm","description":null,"brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55293053960483,"sku":"BIS196","price":20.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS196_1.jpg?v=1782870107"}],"url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/collections\/builder-filter-media.oembed?page=2","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}