{"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\/seachem-zip-bag-43160347574563.webp?v=1790237816","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/seachem-zip-bag","provider":"Nicks AOT","version":"1.0","type":"link"}