{"product_id":"bioscape-1620l-h-canister-replacement-sponges-2-white-1-blue","title":"Bioscape 1620L\/h Canister Replacement Sponges (2 White\/1 Blue)","description":"\u003cp\u003e\u003cstrong\u003eFine wool is designed to clog. That is what it is for.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the genuine BIS541A media set for the Bioscape PRO Easy Clean Canister Filter 1620 L\/h — the BIS541, rated for aquariums up to 400 litres. The pack holds three pads: two white fine filter wool pads and one blue foam\/wool pad. Together they are the fine mechanical stage, sitting between the coarse pre-filter above and the chemical and biological media below.\u003c\/p\u003e\n\n\u003ch3\u003eWhy the white pads are consumable and the blue one is not\u003c\/h3\u003e\n\u003cp\u003eThese three pads look similar and are treated very differently. Getting that wrong is the most common servicing mistake on this filter.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePad\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003cth\u003eJob\u003c\/th\u003e\n\u003cth\u003eHow to service it\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhite fine filter wool\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003ePolishing. Traps the fine suspended particles that leave water faintly milky even when the coarse stages are clean\u003c\/td\u003e\n\u003ctd\u003eReplace every 4 to 6 weeks. Dense wool loses its structure once squeezed and cannot be rinsed indefinitely\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue foam\/wool pad\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eDenser supporting layer beneath the white wool. Catches what the wool releases and carries a real bacterial population\u003c\/td\u003e\n\u003ctd\u003eRinse gently in aquarium water. Keep it through several white-pad changes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat 400 litres does to the interval\u003c\/h3\u003e\n\u003cp\u003eBioscape publishes 4 to 6 weeks for fine wool across the whole PRO range. On the BIS541 the useful part of that range is usually the short end.\u003c\/p\u003e\n\u003cp\u003eThe 1620 L\/h model services up to 400 litres, which in practice means more fish, more food and more plant matter passing the same pad area than on the 1050 L\/h canister. Fine wool that has gone brown and stiff before the four-week mark is not a defect — it is the pad telling you the stocking level, and it should be changed when it gets there rather than at a date on a calendar.\u003c\/p\u003e\n\u003cp\u003eYou do have room to be relaxed about it. This canister carries 9.0 litres of media, most of it ceramic noodles and bio-balls, so your bacterial colony does not depend on the white pads. Replacing them is a low-risk service on this filter in a way it would not be on a small hang-on unit.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eBIS541A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eBIS541A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack contents\u003c\/th\u003e\n\u003ctd\u003e2 white fine filter wool pads, 1 blue foam\/wool pad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eBioscape PRO Easy Clean Canister Filter 1620 L\/h (BIS541) only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHost filter rating\u003c\/th\u003e\n\u003ctd\u003eAquariums up to 400 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHost media capacity\u003c\/th\u003e\n\u003ctd\u003e9.0 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStage\u003c\/th\u003e\n\u003ctd\u003eFine mechanical filtration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBioscape service interval\u003c\/th\u003e\n\u003ctd\u003eReplace fine wool every 4 to 6 weeks\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\n\u003c\/table\u003e\n\n\u003ch3\u003eWhich PRO canister do I have?\u003c\/h3\u003e\n\u003cp\u003eThe three PRO canisters have different body sizes, so the pads are cut differently and do not interchange. Worth knowing: the 1050 and the 1620 share the same 16\/22 mm hose, so hoses and pipework swap between them — the media does not.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter\u003c\/th\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003cth\u003eTanks up to\u003c\/th\u003e\n\u003cth\u003eMedia capacity\u003c\/th\u003e\n\u003cth\u003ePad set\u003c\/th\u003e\n\u003cth\u003eHose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePRO Easy Clean Canister 1050 L\/h (BIS540)\u003c\/td\u003e\n\u003ctd\u003e1,050 L\/h\u003c\/td\u003e\n\u003ctd\u003e250 L\u003c\/td\u003e\n\u003ctd\u003e6.5 L\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-1050l-h-canister-replacement-sponges-2-white-1-blue\"\u003eBIS540A\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e16\/22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePRO Easy Clean Canister 1620 L\/h (BIS541)\u003c\/td\u003e\n\u003ctd\u003e1,620 L\/h\u003c\/td\u003e\n\u003ctd\u003e400 L\u003c\/td\u003e\n\u003ctd\u003e9.0 L\u003c\/td\u003e\n\u003ctd\u003eBIS541A — this page\u003c\/td\u003e\n\u003ctd\u003e16\/22 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePRO Easy Clean Canister 2000 L\/h (BIS542)\u003c\/td\u003e\n\u003ctd\u003e2,000 L\/h\u003c\/td\u003e\n\u003ctd\u003e600 L\u003c\/td\u003e\n\u003ctd\u003e11.0 L\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-2000l-h-canister-replacement-sponges-2-white-1-blue\"\u003eBIS542A\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e19\/25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBIS541A does not fit the Bioscape Tropic canisters, the Bioscape Stainless Steel canisters or any Bioscape hang-on filter. The model code is on the label on the canister body.\u003c\/p\u003e\n\n\u003ch3\u003eWhich BIS541 media do I need?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003ePack contents\u003c\/th\u003e\n\u003cth\u003eStage\u003c\/th\u003e\n\u003cth\u003eBioscape's service instruction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBIS541A (this page)\u003c\/td\u003e\n\u003ctd\u003e2 white fine wool pads, 1 blue foam\/wool pad\u003c\/td\u003e\n\u003ctd\u003eFine mechanical\u003c\/td\u003e\n\u003ctd\u003eReplace fine wool every 4 to 6 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-1620l-h-canister-replacement-carbon-cartridge-1-pack\"\u003eBIS541B\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eActivated carbon pack\u003c\/td\u003e\n\u003ctd\u003eChemical\u003c\/td\u003e\n\u003ctd\u003eReplace every 4 to 6 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-1620l-h-canister-replacement-top-pro-filter-foam-4\"\u003eBIS541C\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4 pre-filter wool pads\u003c\/td\u003e\n\u003ctd\u003eCoarse mechanical, 0.8 L pre-filter chamber\u003c\/td\u003e\n\u003ctd\u003eRinse monthly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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\u003eThe Bioscape PRO Easy Clean Canister Filter 1620 L\/h, freshwater or marine\u003c\/li\u003e\n\u003cli\u003eClearing a persistent haze that survives a water change and a pre-filter rinse\u003c\/li\u003e\n\u003cli\u003eKeeping a spare set on hand so a service is never delayed\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\u003eThe 1050 L\/h or 2000 L\/h PRO canisters — use BIS540A or BIS542A\u003c\/li\u003e\n\u003cli\u003eBioscape Tropic canisters, Stainless Steel canisters or hang-on filters\u003c\/li\u003e\n\u003cli\u003eRemoving tannins, odours or medication — wool adsorbs nothing, that is the carbon pack\u003c\/li\u003e\n\u003cli\u003eReplacing your biological media — the ceramic noodles and bio-balls carry that load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChange the white pads, keep the blue one.\u003c\/strong\u003e Replacing all three at once removes bacteria unnecessarily. Swap the two white wool pads and rinse the blue pad back into service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse in aquarium water, never the tap.\u003c\/strong\u003e Chlorinated water kills the bacterial population on the blue pad, which is the reason for keeping it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse the pre-filter first.\u003c\/strong\u003e If the coarse stage above is clogged, fresh white wool will be brown again within days. Servicing the pre-filter monthly is what makes this pack last its full interval.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch off at the wall before opening the canister.\u003c\/strong\u003e This is a 240 V mains-powered filter with an integrated heater, and a heater left powered in air can crack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the impeller if flow does not return.\u003c\/strong\u003e If fresh pads and a clean pre-filter do not restore output, the fault is mechanical rather than a media problem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the lid seal on every service.\u003c\/strong\u003e A perished seal ring is the usual cause of a canister that leaks after a media change.\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\/bioscape-1620l-h-canister-replacement-top-pro-filter-foam-4\"\u003eBioscape 1620L\/h Canister Pre-Filter Foam 4 Pack (BIS541C)\u003c\/a\u003e — the coarse stage above these pads. Keeping it rinsed is what makes fine wool last four weeks instead of one.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-1620l-h-canister-replacement-carbon-cartridge-1-pack\"\u003eBioscape 1620L\/h Canister Carbon Cartridge (BIS541B)\u003c\/a\u003e — same 4 to 6 week interval, so it makes sense to hold both.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-premium-fine-filter-wool-32-x-12-x-02cm-sheets-6-pack\"\u003eBioscape Premium Fine Filter Wool 6 Pack\u003c\/a\u003e — cut-to-fit sheet wool for topping up between genuine pad changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-replace-canister-seal-ring\"\u003eBioscape Canister Seal Ring\u003c\/a\u003e — the part to have on the shelf before you open the canister, not after.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-pro-easy-clean-canister-filter-with-heater\"\u003eBioscape PRO Easy Clean Canister Filter with Heater\u003c\/a\u003e — the filter range these pads belong to.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eBioscape warrants the PRO canister filters for 2 years. Filter media is a consumable and is not covered by that term. Your rights under the Australian Consumer Law apply to this product and are not limited by any manufacturer's warranty. Ships as a standard parcel.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat is in the BIS541A pack?\u003c\/h4\u003e\n\u003cp\u003eThree pads: two white fine filter wool pads and one blue foam\/wool pad, cut for the Bioscape PRO Easy Clean Canister Filter 1620 L\/h. The white pads are the consumable polishing stage and the blue pad is a rinseable supporting layer.\u003c\/p\u003e\n\u003ch4\u003eHow often should the white wool pads be replaced?\u003c\/h4\u003e\n\u003cp\u003eBioscape specifies replacing fine wool every 4 to 6 weeks in the PRO canister range. On the 1620 L\/h model, which services tanks up to 400 litres, heavily stocked setups will reach that point at the shorter end. Change the pads when they stay brown and stiff after a rinse rather than waiting out the full six weeks.\u003c\/p\u003e\n\u003ch4\u003eCan I rinse the white pads instead of replacing them?\u003c\/h4\u003e\n\u003cp\u003eOnce or twice, to stretch the interval. Fine wool is dense by design and loses its structure as it is squeezed, so it stops catching the fine particles it exists to trap. A pad that stays discoloured and compressed after rinsing is restricting flow rather than filtering.\u003c\/p\u003e\n\u003ch4\u003eWill replacing the white pads crash my cycle?\u003c\/h4\u003e\n\u003cp\u003eIt should not on this filter. The BIS541 carries 9.0 litres of media, and the bulk of the bacterial colony lives on the ceramic noodles and bio-balls rather than the fine wool. Leave the blue pad and the biological media undisturbed during the change and the colony carries through comfortably.\u003c\/p\u003e\n\u003ch4\u003eWill BIS541A fit my 1050 or 2000 L\/h Bioscape canister?\u003c\/h4\u003e\n\u003cp\u003eNo. The 1050 L\/h BIS540 takes BIS540A and the 2000 L\/h BIS542 takes BIS542A. This trips people up because the 1050 and 1620 use the same 16\/22 mm hose, so the plumbing interchanges while the media does not.\u003c\/p\u003e\n\u003ch4\u003eMy water is still hazy after fitting new pads. What now?\u003c\/h4\u003e\n\u003cp\u003eCheck the coarse pre-filter above them, which is the usual culprit, then the lid seal and the impeller. Persistent fine haze that survives clean mechanical media is often a bacterial bloom rather than a filtration fault, and that clears on its own once the tank stabilises.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55293066281251,"sku":"BIS541A","price":25.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/bioscape-1620l-h-canister-re-43179167809827.webp?v=1790234719","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/bioscape-1620l-h-canister-replacement-sponges-2-white-1-blue","provider":"Nicks AOT","version":"1.0","type":"link"}