{"product_id":"bioscape-2000l-h-canister-replacement-top-pro-filter-foam-4","title":"Bioscape 2000L\/h Canister Replacement Top PRO Filter Foam (4)","description":"\u003cp\u003e\u003cstrong\u003eRinse this stage monthly and you rarely have to lift the canister at all.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is the genuine BIS542C pre-filter media 4-pack for the Bioscape PRO Easy Clean Canister Filter 2000 L\/h — the BIS542, rated for tanks up to 600 litres. These four foams serve the canister's 1.0 litre pre-filter chamber, the largest in the PRO range and 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, because it is not true of every media pack on this filter. Bioscape supplies the BIS542 canister with four pre-filter wool pads, and BIS542C is a four-pack. One pack refills the chamber completely.\u003c\/p\u003e\n\u003cp\u003eThat makes this the straightforward one of the three BIS542 media codes. The carbon is the awkward one — the 2000 L\/h canister ships with two carbon packs while \u003ca href=\"\/products\/bioscape-2000l-h-canister-replacement-carbon-cartridge-1-pack\"\u003eBIS542B\u003c\/a\u003e is sold singly, so a full carbon change takes two. For the pre-filter, one pack and you are done.\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 pre-filter chamber above the main media stack.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this is the stage that saves you the most work on this model\u003c\/h3\u003e\n\u003cp\u003eBelow the pre-filter sits 11.0 litres of media — fine wool, two carbon packs, two ceramic noodle packs and two bio-ball packs. Reaching it means disconnecting 19\/25 mm hoses, lifting a canister measuring 280 x 280 x 500 mm and full of water, and opening the body. The pre-filter chamber opens on its own.\u003c\/p\u003e\n\u003cp\u003eOn the largest canister in the range that difference is worth more than it is on the smaller models, simply because the thing you are avoiding lifting is heavier. The practical question is not how good the 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\u003eBIS542C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eBIS542C\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 2000 L\/h (BIS542) only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eServes\u003c\/th\u003e\n\u003ctd\u003ePre-filter chamber, 1.0 L capacity — the largest in the PRO range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHost filter rating\u003c\/th\u003e\n\u003ctd\u003eAquariums up to 600 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHost media capacity\u003c\/th\u003e\n\u003ctd\u003e11.0 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 quickest way to identify the 2000 L\/h is its hose: it is the only model in the range on 19\/25 mm, while the 1050 and 1620 both use 16\/22 mm and swap plumbing freely with each other.\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\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\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\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\u003e0.8 L\u003c\/td\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\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\u003e1.0 L\u003c\/td\u003e\n\u003ctd\u003eBIS542C — this page\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\u003eBIS542C 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 BIS542 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-2000l-h-canister-replacement-sponges-2-white-1-blue\"\u003eBIS542A\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-2000l-h-canister-replacement-carbon-cartridge-1-pack\"\u003eBIS542B\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e1 activated carbon pack — the canister takes two\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\u003eBIS542C (this page)\u003c\/td\u003e\n\u003ctd\u003e4 pre-filter foams — one full refill\u003c\/td\u003e\n\u003ctd\u003eCoarse mechanical, 1.0 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 2000 L\/h, freshwater or marine\u003c\/li\u003e\n\u003cli\u003eHeavily planted or heavily fed tanks approaching the 600 litre rating, where the coarse stage does most of the work\u003c\/li\u003e\n\u003cli\u003eLarge messy feeders — cichlids, goldfish, oscars — that load a pre-filter quickly\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 1620 L\/h PRO canisters — those pre-filter chambers are 0.5 L and 0.8 L, so use BIS540C or BIS541C\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 near the 600 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 a 300 W 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-2000l-h-canister-replacement-sponges-2-white-1-blue\"\u003eBioscape 2000L\/h Canister Sponges (BIS542A)\u003c\/a\u003e — the fine polishing stage these foams protect from coarse debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bioscape-2000l-h-canister-replacement-carbon-cartridge-1-pack\"\u003eBioscape 2000L\/h Canister Carbon Cartridge (BIS542B)\u003c\/a\u003e — the chemical stage, on a 4 to 6 week cycle. This canister takes two packs for a full change.\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 Replace 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 BIS542C pack?\u003c\/h4\u003e\n\u003cp\u003eFour, which is exactly one full refill of the pre-filter chamber. Bioscape supplies the BIS542 canister with four pre-filter wool pads and sells BIS542C as a matching four-pack, so a single pack replaces the whole stage. This is unlike the carbon on the same filter, where the canister takes two packs and BIS542B is sold singly.\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 600 litre rating, or one holding large messy feeders, 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. BIS542C is the correct code for the 2000 L\/h model either way.\u003c\/p\u003e\n\u003ch4\u003eWill BIS542C fit my 1050 or 1620 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 BIS541C 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":55293067395363,"sku":"BIS542C","price":29.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/bioscape-2000l-h-canister-re-43179169448227.webp?v=1790234718","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/bioscape-2000l-h-canister-replacement-top-pro-filter-foam-4","provider":"Nicks AOT","version":"1.0","type":"link"}