{"product_id":"fluval-ac50-biomax-insert","title":"Fluval AC50 BioMax Insert","description":"\u003cp\u003eThe \u003cstrong\u003eFluval AquaClear BioMax\u003c\/strong\u003e is the biological media insert for the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-aquaclear-ac-series-aquarium-filters\"\u003eAquaClear 50 (AC50) power filter\u003c\/a\u003e. Its porous ceramic rings pack an enormous amount of surface area into a small space, giving beneficial bacteria a place to colonize and keep the nitrogen cycle running. Strong biological filtration converts toxic ammonia and nitrite into far less harmful nitrate, so your fish stay healthy. It works in both freshwater and saltwater aquariums. Formerly sold as AquaClear BioMax.\u003c\/p\u003e\n\u003cp\u003ePair it with \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-biofoam-filter-insert\"\u003eBioFoam\u003c\/a\u003e for mechanical filtration and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-active-carbon-insert\"\u003eActivated Carbon\u003c\/a\u003e for water polishing, or refresh everything at once with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-filter-media-maintenance-kit\"\u003eAC50 Filter Media Kit\u003c\/a\u003e. Browse all inserts in our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/filter-media-cartridges\"\u003eFilter Media \u0026amp; Cartridges\u003c\/a\u003e collection.\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;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePorous ceramic rings offer a huge surface area for beneficial bacteria\u003c\/li\u003e\n\u003cli\u003eSupports a healthy nitrogen cycle: ammonia to nitrite to nitrate\u003c\/li\u003e\n\u003cli\u003eLong-lasting biological media, rinse and reuse for many months\u003c\/li\u003e\n\u003cli\u003eCustom-cut insert drops straight into the AquaClear 50 \/ Fluval AC50 media basket\u003c\/li\u003e\n\u003cli\u003eWorks in freshwater and saltwater aquariums\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;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eRinse the BioMax gently in used aquarium water, then set it in the top of the AquaClear media basket so the beneficial bacteria stay fed with oxygen-rich water. Never rinse it under tap water, since chlorine kills the bacteria colony. BioMax lasts a long time; replace it only when the rings start to crumble, and avoid changing all of your biological media at the same time so the tank does not go through a mini-cycle.\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;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:6px 0;font-size:0.95em;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;background:#f6f6f6;padding:6px 10px;font-weight:600;\"\u003eProduct\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eAquaClear BioMax AC50 (formerly AquaClear BioMax)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;background:#f6f6f6;padding:6px 10px;font-weight:600;\"\u003eMedia\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePorous ceramic rings (biological filtration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;background:#f6f6f6;padding:6px 10px;font-weight:600;\"\u003eFits\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eAquaClear 50 \/ Fluval AC50 hang-on-back filter (20 to 50 gallon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;background:#f6f6f6;padding:6px 10px;font-weight:600;\"\u003eSupports\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eBeneficial bacteria and the nitrogen cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;background:#f6f6f6;padding:6px 10px;font-weight:600;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e2.8 oz (80 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;background:#f6f6f6;padding:6px 10px;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;background:#f6f6f6;padding:6px 10px;font-weight:600;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFluval\u003c\/td\u003e\n\u003c\/tr\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\"\u003eAquaClear \/ Fluval AC50 power filter\u003c\/a\u003e, the filter this insert fits\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-biofoam-filter-insert\"\u003eAquaClear AC50 BioFoam\u003c\/a\u003e for mechanical and biological filtration\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-active-carbon-insert\"\u003eAquaClear AC50 Activated Carbon\u003c\/a\u003e for chemical filtration\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-filter-media-maintenance-kit\"\u003eAC50 Filter Media Kit\u003c\/a\u003e, which bundles BioFoam, carbon, and BioMax\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;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich filter does this fit?\u003c\/strong\u003e The AquaClear 50 (also sold as the Fluval AC50), rated for 20 to 50 gallon aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I replace it?\u003c\/strong\u003e BioMax lasts a long time. Rinse it in tank water at cleanings and replace it only when the rings begin to break down.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in saltwater?\u003c\/strong\u003e Yes. The ceramic media supports beneficial bacteria in freshwater and marine tanks alike.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I swap all my biomedia at once?\u003c\/strong\u003e No. Replace it in stages so your tank always keeps some established biological media and avoids a mini-cycle.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Single","offer_id":48931475718363,"sku":"19662","price":7.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_93c73b34-afaa-4933-8a8b-c8a6b4709ebd.jpg?v=1782932645","url":"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-biomax-insert","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}