{"product_id":"fluval-ac20-30-biomax-insert","title":"Fluval AC20\/30 BioMax Insert","description":"\u003cp\u003eThe \u003cstrong\u003eFluval AquaClear BioMax Insert\u003c\/strong\u003e is high-porosity ceramic ring media that gives beneficial bacteria a massive surface area to colonize inside your AquaClear 20 or AquaClear 30 hang-on-back filter. Those bacteria are what power your nitrogen cycle, converting toxic ammonia and nitrite into far safer nitrate. More surface area means a bigger, more stable biological filter and a healthier tank.\u003c\/p\u003e\n\u003cp\u003eBuilding out your filter or restocking media? Browse all \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/filter-media-cartridges\"\u003efilter media and cartridges\u003c\/a\u003e at Squeaky's Aquatics.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhy AquaClear BioMax\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePromotes bio activity.\u003c\/strong\u003e The complex network of pores in each ceramic ring hosts far more bacteria than smooth media, so your tank processes waste faster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintains a healthy nitrogen cycle.\u003c\/strong\u003e A strong biological bed keeps ammonia and nitrite at zero, the single most important factor in fish health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong lasting and reusable.\u003c\/strong\u003e Rinse it gently in old tank water and put it back. Ceramic media lasts for months before it needs replacing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater and saltwater safe.\u003c\/strong\u003e The ceramic is inert and works in tropical, coldwater, and marine aquariums alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eWhere It Fits in the AquaClear System\u003c\/h3\u003e\n\u003cp\u003eAquaClear power filters run three stages: water passes through the BioFoam first, then activated carbon or a carbon blend, then \u003cstrong\u003eBioMax\u003c\/strong\u003e ceramic rings for the final biological polish. BioMax sits at the top of the stack so bacteria get clean, oxygen-rich water to do their work.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFits the \u003cstrong\u003eFluval AquaClear 20 (AC20, Mini) and AquaClear 30 (AC30)\u003c\/strong\u003e power filters. One insert covers both models.\u003c\/li\u003e\n\u003cli\u003eRinse in dechlorinated or used tank water every few weeks. Never rinse under hot tap water, which kills the bacteria you are trying to grow.\u003c\/li\u003e\n\u003cli\u003eWhen it is time to replace it, swap out only half at a time so you never reset your whole biological filter at once.\u003c\/li\u003e\n\u003cli\u003eGreat insurance when cycling a new tank, adding fish, or upgrading your filtration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;margin:4px 0 8px;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFluval AquaClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCeramic ring biological media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eFits\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFluval AquaClear 20 and 30 (AC20 \/ AC30) power filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eFunction\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHosts beneficial bacteria for the nitrogen cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eReusable\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eYes, rinse and reuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eWater type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e1.5 oz (42 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;background:#f6f6f6;font-weight:600;\"\u003eCountry of origin\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eItaly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-aquaclear-ac-series-aquarium-filters\"\u003eFluval AquaClear Power Filter\u003c\/a\u003e, the hang-on-back filter this insert is built for.\u003c\/li\u003e\n\u003cli\u003ePair with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac30-biofoam-filter-insert\"\u003eAquaClear BioFoam\u003c\/a\u003e for mechanical filtration and the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac20-30-clear-carb-insert\"\u003eClear-Carb\u003c\/a\u003e for chemical filtration.\u003c\/li\u003e\n\u003cli\u003eRunning a larger filter? Grab the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-biomax-insert\"\u003eAC50\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac70-110-biomax-insert\"\u003eAC70\/110\u003c\/a\u003e BioMax instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #666;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I replace BioMax?\u003c\/strong\u003e\u003cbr\u003eCeramic media lasts a long time. Replace it every few months, and only swap out half at a time so the remaining rings keep your bacteria colony alive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I rinse it in tap water?\u003c\/strong\u003e\u003cbr\u003eNo. Chlorine in tap water kills beneficial bacteria. Always rinse BioMax in dechlorinated water or a cup of old tank water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it work in saltwater?\u003c\/strong\u003e\u003cbr\u003eYes. The ceramic is inert and safe for freshwater, brackish, and marine aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this the same as the old AquaClear BioMax?\u003c\/strong\u003e\u003cbr\u003eYes. Fluval BioMax is the current name for what was formerly labeled AquaClear BioMax for the same filters.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Single","offer_id":48927185797339,"sku":"19660","price":3.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_ed743c0c-417a-4648-981b-8f9ecf9ffd21.jpg?v=1782920345","url":"https:\/\/squeakysaquatics.com\/products\/fluval-ac20-30-biomax-insert","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}