{"product_id":"fluval-premium-betta-kit-20ltr-replacement-cartridge-4","title":"Fluval Premium Betta Kit 20ltr replacement cartridge (4)","description":"\u003cp\u003e\u003cstrong\u003eGenuine replacement media for the Fluval Premium Betta Kit 20 L.\u003c\/strong\u003e This four-pack of carbon-impregnated poly-carb cartridges restores mechanical and chemical filtration in the 20 L Betta Kit once the original media is exhausted.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon-impregnated polyester cartridge\u003c\/strong\u003e — traps debris mechanically while the carbon pulls dissolved impurities and odours from the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine fit\u003c\/strong\u003e — made for the Fluval Premium Betta Kit 20 L filtration chamber, no trimming needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-pack\u003c\/strong\u003e — enough for roughly two to four months of scheduled changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFits\u003c\/h3\u003e\n\u003cp\u003eFluval Premium Betta Kit, 20 L (Fluval item FBK02) only. It does not fit the 10 L Betta Kit, which uses a different filter chamber.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack size\u003c\/td\u003e\n\u003ctd\u003e4 cartridges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia type\u003c\/td\u003e\n\u003ctd\u003eCarbon-impregnated polyester — mechanical and chemical filtration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\u003ctd\u003eFluval A1338\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits\u003c\/td\u003e\n\u003ctd\u003eFluval Premium Betta Kit 20 L only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eFluval recommends replacing the cartridge roughly every 2–4 weeks, sooner if flow visibly drops or the water starts to yellow — both signs the carbon is exhausted and the pad is clogging.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable as a genuine replacement for the Fluval Premium Betta Kit 20 L.\u003c\/li\u003e\n\u003cli\u003eNot suitable for the 10 L Betta Kit or any other Fluval filter — check your kit size before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the 10 L Betta Kit?\u003c\/h4\u003e\n\u003cp\u003eNo — it's sized for the 20 L kit's filter chamber only.\u003c\/p\u003e\n\u003ch4\u003eHow often should I replace it?\u003c\/h4\u003e\n\u003cp\u003eRoughly every 2–4 weeks, or sooner if flow drops noticeably.\u003c\/p\u003e\n\u003ch4\u003eCan I rinse and reuse a cartridge?\u003c\/h4\u003e\n\u003cp\u003eRinsing extends a cartridge's mechanical life slightly, but the carbon component is single-use — once its odour and impurity removal is exhausted it won't recharge by rinsing.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":55293296935203,"sku":"FBK02A","price":27.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-premium-betta-kit-20l-43875478503715.webp?v=1790236672","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-premium-betta-kit-20ltr-replacement-cartridge-4","provider":"Nicks AOT","version":"1.0","type":"link"}