{"product_id":"fluval-c3-hang-on-filter-bio-screen","title":"Fluval C3 Hang On Filter Bio-Screen","description":"\u003cp\u003e\u003cstrong\u003eGives beneficial bacteria somewhere to live and spreads water evenly through the biological stage.\u003c\/strong\u003e This is the genuine Fluval Bio-Screen (item 14021) for the C3 Power Filter — a three-pack of biological media that sits over the trickle chamber, doing double duty as a colonisation surface and a coarse debris trap.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiological surface area\u003c\/strong\u003e — gives nitrifying bacteria a place to establish, on top of what the BIOMAX nodes underneath provide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEven flow distribution\u003c\/strong\u003e — spreads water across the trickle chamber rather than letting it channel through one spot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary debris capture\u003c\/strong\u003e — catches fine particles the foam pad ahead of it misses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree screens per pack\u003c\/strong\u003e — genuine Fluval item 14021, sized for the C3 trickle chamber.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFluval item number\u003c\/th\u003e\n\u003ctd\u003e14021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003ctd\u003e3 bio-screens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFiltration stage\u003c\/th\u003e\n\u003ctd\u003eBiological\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003ctd\u003eFluval C3 Power Filter (item 14002)\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\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWill it fit my filter?\u003c\/h3\u003e\u003cp\u003eFits the trickle chamber of the \u003cstrong\u003eFluval C3 Power Filter\u003c\/strong\u003e only — it is not interchangeable with the C2 or C4 bio-screen, which are sized to their own housings.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSuitable for freshwater and saltwater tanks running a Fluval C3 Power Filter.\u003c\/li\u003e\n\u003cli\u003eNot suitable to replace all at once alongside every other media type — doing so removes most of the filter's established bacteria in one go.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eFluval doesn't publish a fixed replacement schedule for the bio-screen — it's a longer-lived biological substrate rather than a consumable on a fixed clock. Rinse it gently in removed tank water during routine filter maintenance to clear trapped debris, and only replace it once it's torn or so clogged that flow through the trickle chamber is visibly reduced.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFluval C3 Foam Pad (item 14006) — the mechanical stage ahead of this one.\u003c\/li\u003e\n\u003cli\u003eFluval C3 Activated Carbon (item 14012) — the chemical polishing stage that follows.\u003c\/li\u003e\n\u003cli\u003eFluval C3 Ammonia Remover (item 14015) — extra ammonia control for freshwater tanks while the biological colony is still establishing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by Fluval's standard replacement-media warranty against manufacturing defects, in addition to your rights under Australian Consumer Law. Ships as a standard parcel.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eHow often should I replace the bio-screen?\u003c\/h4\u003e\u003cp\u003eThere's no fixed schedule from Fluval — rinse it during routine maintenance and only replace it when it's torn or heavily clogged.\u003c\/p\u003e\u003ch4\u003eWhat does the bio-screen actually do?\u003c\/h4\u003e\u003cp\u003eIt gives bacteria a surface to live on, spreads water evenly into the trickle chamber, and catches fine debris the foam pad ahead of it lets through.\u003c\/p\u003e\u003ch4\u003eShould I replace all my filter media at the same time?\u003c\/h4\u003e\u003cp\u003eNo — stagger it. Replacing every stage at once strips most of the bacteria colony from the filter in one go.\u003c\/p\u003e\u003ch4\u003eWill this fit my C2 or C4 filter?\u003c\/h4\u003e\u003cp\u003eNo. Each C-series size uses its own bio-screen.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293298311459,"sku":"FLC02F","price":26.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-c3-hang-on-filter-bio-46120695169315.webp?v=1790240277","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-c3-hang-on-filter-bio-screen","provider":"Nicks AOT","version":"1.0","type":"link"}