{"product_id":"bioscape-1620l-h-canister-replacement-top-pro-filter-foam-4","title":"Bioscape 1620L\/h Canister Replacement Top PRO Filter Foam (4)","description":"\u003cp\u003e\u003cstrong\u003eRinse this stage monthly and you rarely have to open the rest.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the genuine BIS541C pre-filter media 4-pack for the Bioscape PRO Easy Clean Canister Filter 1620 L\/h — the BIS541, rated for tanks up to 400 litres. These four foams serve the canister's 0.8 litre pre-filter chamber, the first thing tank water meets on the way in. Bioscape's service instruction for this stage is to rinse the pre-filter wool pads monthly.\u003c\/p\u003e\n\n\u003ch3\u003eOne pack is one full refill\u003c\/h3\u003e\n\u003cp\u003eWorth knowing before you order: the BIS541 canister ships from Bioscape with four pre-filter wool pads, and BIS541C is a four-pack. One pack refills the chamber completely rather than partially, so there is no need to work out how many you need.\u003c\/p\u003e\n\u003cp\u003eBioscape uses two names for the same item — the included-media list calls them pre-filter wool pads, the spare part is sold as Top PRO filter foam. Both refer to the coarse media in the 0.8 litre pre-filter chamber above the main media stack.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this is the stage that saves you work\u003c\/h3\u003e\n\u003cp\u003eBelow the pre-filter sits 9.0 litres of media — fine wool, carbon, ceramic noodles and bio-balls. Getting to it means disconnecting hoses, lifting the canister and opening the body. The pre-filter chamber, by contrast, opens on its own.\u003c\/p\u003e\n\u003cp\u003eSo the practical question on this filter is not how good the pre-filter foam is. It is whether coarse debris gets stopped in the part you can open in two minutes, or the part you have to strip down.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003eWhat it usually means\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet flow has weakened but recovers fully after a pre-filter rinse\u003c\/td\u003e\n\u003ctd\u003eNormal. This is the stage doing its job — rinse it monthly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow drops again within a week of rinsing\u003c\/td\u003e\n\u003ctd\u003eThe tank is producing more debris than a monthly rinse handles. Rinse fortnightly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoam stays compressed after rinsing, or tears at the edge\u003c\/td\u003e\n\u003ctd\u003eReplace it. It is no longer sealing across the chamber and debris is bypassing the stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine wool below is brown within days of a change\u003c\/td\u003e\n\u003ctd\u003eThe pre-filter is not being serviced often enough, and the fine stage is doing coarse work\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow does not recover at all after a rinse\u003c\/td\u003e\n\u003ctd\u003eLook past the media — usually a blocked intake, kinked hose or a fouled impeller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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\u003eBIS541C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eBIS541C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack contents\u003c\/th\u003e\n\u003ctd\u003e4 pre-filter foams — one full chamber refill\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\u003eServes\u003c\/th\u003e\n\u003ctd\u003ePre-filter chamber, 0.8 L capacity\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\u003eStage\u003c\/th\u003e\n\u003ctd\u003eCoarse mechanical, first stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBioscape service instruction\u003c\/th\u003e\n\u003ctd\u003eRinse monthly. No fixed replacement interval published\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\u003eEach PRO canister has a different pre-filter volume, so the foams are cut to three different sizes and do not interchange. The 1050 and the 1620 share the same 16\/22 mm hose, which means hoses and pipework swap between them even though 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\u003ePre-filter volume\u003c\/th\u003e\n\u003cth\u003eFoam pack\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\u003e0.5 L\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-1050l-h-canister-replacement-top-pro-filter-foam-4\"\u003eBIS540C\u003c\/a\u003e\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\u003e0.8 L\u003c\/td\u003e\n\u003ctd\u003eBIS541C — this page\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\u003e1.0 L\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-2000l-h-canister-replacement-top-pro-filter-foam-4\"\u003eBIS542C\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBIS541C does not fit the Bioscape Tropic canisters, the Bioscape Stainless Steel canisters or any Bioscape hang-on filter. The model code is printed 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\u003e\u003ca href=\"\/products\/bioscape-1620l-h-canister-replacement-sponges-2-white-1-blue\"\u003eBIS541A\u003c\/a\u003e\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\u003eBIS541C (this page)\u003c\/td\u003e\n\u003ctd\u003e4 pre-filter foams\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\u003eHeavily planted or heavily fed 300 to 400 litre tanks, where the coarse stage does most of the work\u003c\/li\u003e\n\u003cli\u003eKeeping a full spare set on hand so the chamber is never run half-empty\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 — the pre-filter chambers are 0.5 L and 1.0 L, so use BIS540C or BIS542C\u003c\/li\u003e\n\u003cli\u003eBioscape Tropic canisters, Stainless Steel canisters or hang-on filters\u003c\/li\u003e\n\u003cli\u003eFine polishing — this is a coarse stage and will not clear hazy water on its own\u003c\/li\u003e\n\u003cli\u003eChemical filtration — foam adsorbs nothing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse monthly.\u003c\/strong\u003e That is Bioscape's stated interval for the pre-filter media. A tank at the top of the 400 litre rating, or one that is fed heavily, will want it fortnightly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse in aquarium water, not under the tap.\u003c\/strong\u003e Even coarse foam carries a bacterial population and chlorinated water kills it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not rinse the pre-filter the same week you change the fine wool and carbon.\u003c\/strong\u003e Stripping three stages at once takes out more biology than one service should. Space the jobs apart.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace when the foam stops recovering.\u003c\/strong\u003e Bioscape publishes no fixed replacement interval for this stage — a foam that stays compressed after rinsing or tears at the edge should be swapped out, and one that springs back should go straight back in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch off at the wall before opening anything.\u003c\/strong\u003e This is a 240 V mains-powered canister with an integrated heater, and a heater left powered in air can crack.\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-sponges-2-white-1-blue\"\u003eBioscape 1620L\/h Canister Sponges (BIS541A)\u003c\/a\u003e — the fine polishing stage these foams protect from coarse debris.\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 — the chemical stage, on a 4 to 6 week cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-premium-coarse-filter-wool-blue-32-x-12-x-02cm-sheets-3-pack\"\u003eBioscape Premium Coarse Filter Wool Blue 3 Pack\u003c\/a\u003e — cut-to-fit coarse sheet for adding a further mechanical stage in the main body.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-replace-canister-seal-ring\"\u003eBioscape Canister Seal Ring\u003c\/a\u003e — cheap insurance against a leak the first time you open a canister that has not been serviced in a while.\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 foams are cut for.\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\u003eHow many foams are in the BIS541C pack?\u003c\/h4\u003e\n\u003cp\u003eFour, which is exactly one full refill of the pre-filter chamber. Bioscape supplies the BIS541 canister with four pre-filter wool pads and sells BIS541C as a matching four-pack, so a single pack replaces the whole stage.\u003c\/p\u003e\n\u003ch4\u003eHow often do the pre-filter foams need rinsing?\u003c\/h4\u003e\n\u003cp\u003eBioscape's instruction is to rinse the pre-filter media monthly to maintain strong flow. On a tank near the 400 litre rating, or one that is fed heavily, fortnightly is more realistic. Rinse in a container of aquarium water rather than under the tap.\u003c\/p\u003e\n\u003ch4\u003eDo these foams have a replacement interval?\u003c\/h4\u003e\n\u003cp\u003eNo. Bioscape publishes a monthly rinse interval for pre-filter media but no fixed replacement schedule. Replace a foam when it stays compressed after rinsing, tears, or no longer seals across the chamber, because at that point debris is bypassing the stage rather than being caught.\u003c\/p\u003e\n\u003ch4\u003eIs Top PRO filter foam the same thing as pre-filter wool?\u003c\/h4\u003e\n\u003cp\u003eYes. Bioscape uses both names for the coarse media in the pre-filter chamber of the PRO canister range — the included-media list calls them pre-filter wool pads and the spare part is catalogued as Top PRO filter foam. BIS541C is the correct code for the 1620 L\/h model either way.\u003c\/p\u003e\n\u003ch4\u003eWill BIS541C fit my 1050 or 2000 L\/h Bioscape canister?\u003c\/h4\u003e\n\u003cp\u003eNo. The pre-filter chambers are different sizes: 0.5 litres on the 1050 L\/h, 0.8 litres on the 1620 L\/h and 1.0 litres on the 2000 L\/h. Those two models take BIS540C and BIS542C respectively.\u003c\/p\u003e\n\u003ch4\u003eThe pre-filter lid will not lift off. What am I doing wrong?\u003c\/h4\u003e\n\u003cp\u003eAlmost certainly nothing — it is a vacuum rather than a jammed lid. Slightly loosening the red cap on the inlet lets a few air bubbles in, which releases the airlock and allows the lid to lift away cleanly. Levering at it while it is still sealed is how the lid gets cracked.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55293067264291,"sku":"BIS541C","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-43179169317155.webp?v=1790234717","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/bioscape-1620l-h-canister-replacement-top-pro-filter-foam-4","provider":"Nicks AOT","version":"1.0","type":"link"}