{"product_id":"fluval-ac50-clear-carb-insert","title":"Fluval AC50 Clear-Carb Insert","description":"\u003cp\u003eThe \u003cstrong\u003eFluval AquaClear Clear-Carb\u003c\/strong\u003e is a two-in-one replacement insert for the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-aquaclear-ac-series-aquarium-filters\"\u003eAquaClear 50 (AC50) power filter\u003c\/a\u003e. It pairs activated carbon, which removes odors, discoloration, and dissolved organics, with ClearMax, a resin that pulls phosphate, nitrite, and nitrate out of the water. Lowering phosphate starves nuisance algae, so the tank stays cleaner and needs less maintenance. It works in both freshwater and saltwater aquariums. Formerly sold as AquaClear Clear-Carb.\u003c\/p\u003e\n\u003cp\u003eRun it as your polishing stage alongside \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-biofoam-filter-insert\"\u003eBioFoam\u003c\/a\u003e, or step up to plain \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-active-carbon-insert\"\u003eActivated Carbon\u003c\/a\u003e when you do not need phosphate control. 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\u003eActivated carbon removes odors, discoloration, and dissolved organics\u003c\/li\u003e\n\u003cli\u003eClearMax resin removes phosphate, nitrite, and nitrate\u003c\/li\u003e\n\u003cli\u003eLowers phosphate to help starve nuisance algae\u003c\/li\u003e\n\u003cli\u003eKeeps water clear and reduces maintenance between water changes\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 insert, then set it in the AquaClear media basket above the foam so water passes through it. Both the carbon and the ClearMax gradually exhaust, so replace the insert about every three to four weeks, or sooner if odors, discoloration, or algae return. Remove it while dosing \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/medication\"\u003emedications\u003c\/a\u003e, since the carbon will adsorb them, then add a fresh insert afterward.\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 Clear-Carb AC50 (formerly AquaClear Clear-Carb)\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;\"\u003eActivated carbon + ClearMax resin\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;\"\u003eRemoves\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eOdors, discoloration, phosphate, nitrite, and nitrate\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;\"\u003eNet weight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e2.6 oz (75 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-active-carbon-insert\"\u003eAquaClear AC50 Activated Carbon\u003c\/a\u003e for chemical filtration without phosphate control\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\/collections\/filter-media-cartridges\"\u003eFilter Media \u0026amp; Cartridges\u003c\/a\u003e, all replacement media in one place\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\u003eWhat does ClearMax do?\u003c\/strong\u003e It is a resin that removes phosphate, nitrite, and nitrate, which helps control algae and keeps water quality high.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in saltwater?\u003c\/strong\u003e Yes. Both the carbon and the ClearMax work in freshwater and marine tanks, and reef keepers often use phosphate removers to fight algae.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I replace it?\u003c\/strong\u003e About every three to four weeks, or sooner if odors, discoloration, or algae come back.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Single","offer_id":48931477258459,"sku":"19627","price":6.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_6dfcd87f-53cb-43e8-96e1-ac5f691eebf5.jpg?v=1782932795","url":"https:\/\/squeakysaquatics.com\/products\/fluval-ac50-clear-carb-insert","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}