{"title":"CO2 Systems","description":null,"products":[{"product_id":"fluval-bio-co2-pro-systems","title":"Fluval Bio-CO2 Pro Systems","description":"\u003ch1 class=\"product_title entry-title\"\u003eBio-CO2 Pro Low-Pressure System\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe Bio-CO2 Pro system combines the safety of biological carbon dioxide production with the convenience of pressurized delivery. Offering simplicity and unparalleled performance in an easy-to-use format, Bio-CO2 delivers reliable and controllable CO2 through the naturally occurring fermentation process. With safe, low-pressure operation, it is the most secure, simple, and environmentally-friendly aquarium CO2 delivery system available.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"wp-block-jetpack-layout-grid alignfull column1-desktop-grid__span-12 column1-desktop-grid__row-1 column1-tablet-grid__span-8 column1-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1\"\u003e\n\u003cdiv class=\"wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none\"\u003e\n\u003cdiv class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"\u003e\n\u003cdiv class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"\u003e\n\u003ch2 class=\"wp-block-heading in-nav-item\" id=\"h-features\" data-scroll=\"features\"\u003eFeatures\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"\u003e\n\u003cul class=\"wp-block-list list\"\u003e\n\u003cli\u003eEasy-to-use CO2 delivery system allows both new and experienced hobbyists to effortlessly grow and maintain vibrant live aquatic plants\u003c\/li\u003e\n\u003cli\u003eSafe low-pressure operation – 1.3 bar \/ 19 psi max. vs. traditional high-pressurized systems (55-80 bar \/ 800-1100 psi)\u003c\/li\u003e\n\u003cli\u003eProvides up to 30 days of reliable CO2 production through a naturally occurring fermentation process involving sustainable raw materials (sugar and yeast)\u003c\/li\u003e\n\u003cli\u003eRecharging convenience – no refilling high-pressure cylinders\u003c\/li\u003e\n\u003cli\u003eQuick 4-step process requires less than 10 minutes per month to maintain\u003c\/li\u003e\n\u003cli\u003eHigh-quality stainless steel reaction chamber with 100% silicone gasket prevents CO2 escape\u003c\/li\u003e\n\u003cli\u003eAdjustable bubble counter with precision regulator and nano bubble diffuser for accurate CO2 delivery\u003c\/li\u003e\n\u003cli\u003ePressure release valve for additional security and peace of mind\u003c\/li\u003e\n\u003cli\u003eStarter Bio- CO2 Activator yeast and Booster tablets included – Refill Packs sold separately (#A8457)\u003c\/li\u003e\n\u003cli\u003eSystem is compatible with CO2 level tests (sold separately)\u003c\/li\u003e\n\u003cli\u003eDeveloped in Germany\u003c\/li\u003e\n\u003cli\u003eFor best results, add tap water with a temperature of 80 – 85 °F \/ 27 – 30 °C.\u003cbr\u003eRecommended room temperature should be between 68 – 72 °F \/ 20 – 22 °C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-jetpack-layout-grid alignfull column1-desktop-grid__span-12 column1-desktop-grid__row-1 column1-tablet-grid__span-8 column1-tablet-grid__row-1 column1-mobile-grid__span-4 column1-mobile-grid__row-1\"\u003e\n\u003cdiv class=\"wp-block-jetpack-layout-grid-column wp-block-jetpack-layout-grid__padding-none\"\u003e\n\u003cdiv class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"\u003e\n\u003cdiv class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"\u003e\n\u003ch2 class=\"wp-block-heading in-nav-item\" id=\"h-what-s-included\" data-scroll=\"what’s-included\"\u003eWhat’s Included\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\"\u003e\n\u003cul class=\"wp-block-list list\"\u003e\n\u003cli\u003eStainless-Steel Reaction Chamber\u003c\/li\u003e\n\u003cli\u003eAdjustable bubble counter with precision regulator\u003c\/li\u003e\n\u003cli\u003eNano Bubble Diffuser\u003c\/li\u003e\n\u003cli\u003ePressure Release Valve\u003c\/li\u003e\n\u003cli\u003eInline Check Valve\u003c\/li\u003e\n\u003cli\u003eGasket x 2\u003c\/li\u003e\n\u003cli\u003eAirline with gas barrier (5 ft \/ 1.5 m)\u003c\/li\u003e\n\u003cli\u003eActivator packet x 2\u003c\/li\u003e\n\u003cli\u003eBooster packet x 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Fluval","offers":[{"title":"Up to 33 Gallon","offer_id":48910536245467,"sku":"A8460","price":138.99,"currency_code":"USD","in_stock":true},{"title":"Up to 66 Gallon","offer_id":48910536278235,"sku":"A8463","price":169.99,"currency_code":"USD","in_stock":true},{"title":"Up to 132 Gallon","offer_id":48910536311003,"sku":"A8466","price":327.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_06196d62-b7ae-44a9-b749-c272b188d909.jpg?v=1782477811"},{"product_id":"fluval-bio-co2-pro-refill-pack","title":"Fluval Bio-CO2 Pro Refill Pack","description":"\u003cp\u003e\u003cstrong\u003eFluval Bio-CO2 Pro Refill Pack\u003c\/strong\u003e restocks the fermentation ingredients for your Fluval Bio-CO2 Pro low-pressure CO2 system. Each pack contains four Activator yeast sachets and four Booster tablets, pre-measured with high-quality German Champagne yeast plus stabilizers and nutrients for a clean, consistent CO2 supply. Just add sugar and water, and the reaction produces CO2 within about 24 hours to keep your planted tank thriving.\u003c\/p\u003e\n\u003cp\u003eIt fits every \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-pro-systems\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 Pro System\u003c\/a\u003e (Models 125, 250, and 500). Pair your CO2 with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-diffuser\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eBio-CO2 Diffuser\u003c\/a\u003e to disperse it and the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-co2-indicator-set\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eCO2 Indicator Set\u003c\/a\u003e to keep levels dialed in.\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;\"\u003eWhat's In the Pack\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003e4 x Bio-CO2 Activator yeast sachets (German Champagne yeast)\u003c\/li\u003e\n\u003cli\u003e4 x Bio-CO2 Booster tablets (stabilizers and nutrients)\u003c\/li\u003e\n\u003cli\u003eSugar is not included and is sold separately\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;\"\u003eDosing by Model\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eHow much of the pack each refill uses, and how long one pack lasts:\u003c\/p\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:0 0 8px;font-size:0.95em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f6f6f6;\"\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eYour system\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003ePer refill\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eSugar (separate)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003ePack lasts up to\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eBio-CO2 Pro 125\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e1 sachet + 1 tablet\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e1 cup \/ 240 g\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e4 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eBio-CO2 Pro 250\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e2 sachets + 2 tablets\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e2 cups \/ 480 g\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e2 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eBio-CO2 Pro 500\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e4 sachets + 4 tablets\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e4 cups \/ 960 g\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e1 month\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;\"\u003eWhy the Bio-CO2 System\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe low pressure.\u003c\/strong\u003e A gentle fermentation reaction, not a high-pressure cylinder, so it is easy and worry-free to run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast to start.\u003c\/strong\u003e CO2 begins flowing within about 24 hours of mixing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium yeast.\u003c\/strong\u003e German Champagne yeast with nutrients gives a steady, reliable output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-measured.\u003c\/strong\u003e No guesswork. Drop in a sachet and a tablet, add sugar and water, and go.\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 Refill\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003eAdd the sachets and tablets for your model, shown in the chart above, to the reaction canister.\u003c\/li\u003e\n\u003cli\u003eAdd the matching amount of sugar (sold separately) and fill with room-temperature water to the fill line.\u003c\/li\u003e\n\u003cli\u003eSeal it and wait about 24 hours for fermentation to build pressure and start delivering CO2.\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 style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eDo I need to buy sugar?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eYes. Sugar is the fuel for the reaction and is sold separately. Use plain white table sugar in the amount listed for your model.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eHow long does one pack last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eIt depends on your system: about 4 months on a Bio-CO2 Pro 125, 2 months on a 250, or 1 month on a 500.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eWill it work with my Bio-CO2 Pro?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eYes. This refill fits all Fluval Bio-CO2 Pro low-pressure systems, Models 125, 250, and 500.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eFreshwater or saltwater?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eFreshwater planted tanks. CO2 injection feeds aquarium plants and is not used in marine or reef systems.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":48910549876955,"sku":"A8457","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_a7ead99f-2e12-4974-89a2-41402cf9f253.jpg?v=1782478189"},{"product_id":"fluval-co2-indicator-set","title":"Fluval CO2 Indicator Set","description":"\u003cp\u003e\u003cstrong\u003eFluval CO2 Indicator Set\u003c\/strong\u003e lets you see your planted aquarium's CO2 level at a glance. The glass drop checker holds a color-changing indicator fluid that shifts from blue to green to yellow as dissolved CO2 rises, so you can dial in the sweet spot for lush plant growth without guessing. It is the easy way to keep CO2 in the safe, effective range for your plants and fish.\u003c\/p\u003e\n\u003cp\u003ePair it with the \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-diffuser\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 Diffuser\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-pro-systems\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 Pro System\u003c\/a\u003e to run and monitor CO2 together, and browse our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003elive aquarium plants\u003c\/a\u003e.\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;\"\u003eWhat's In the Set\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003eGlass raindrop drop checker with suction cup\u003c\/li\u003e\n\u003cli\u003e10 mL (0.34 fl oz) CO2 Indicator Liquid\u003c\/li\u003e\n\u003cli\u003eColor check sticker for quick reference\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;\"\u003eReading the Colors\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:0 0 8px;font-size:0.95em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f6f6f6;\"\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eColor\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eCO2 level\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eWhat it means\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong style=\"color:#1565C0;\"\u003eBlue\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e25 ppm or less\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCO2 is too low, increase it\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong style=\"color:#2E7D32;\"\u003eGreen\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e26 to 35 ppm\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eIdeal, aim for about 30 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003cstrong style=\"color:#B8860B;\"\u003eYellow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e36 ppm or more\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCO2 is too high, dial it back\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;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003eAdd 15 drops of the CO2 Indicator Liquid into the drop checker, then rotate it upright so the sphere is about one third full.\u003c\/li\u003e\n\u003cli\u003eMount it with the suction cup roughly 10 cm (4 in) below the water surface, where you can see it easily.\u003c\/li\u003e\n\u003cli\u003eAllow about 12 hours for the fluid to react before reading the color, since it responds gradually.\u003c\/li\u003e\n\u003cli\u003eRefresh the indicator liquid about every 30 days to keep readings accurate.\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;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-diffuser\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 Diffuser\u003c\/a\u003e: the ceramic-disc diffuser that mists CO2 into your tank\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-pro-systems\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 Pro System\u003c\/a\u003e: the low-pressure CO2 source for planted setups\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eLive aquarium plants\u003c\/a\u003e: the plants that reward steady CO2 with faster, healthier growth\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 style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eWhat does it measure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eDissolved CO2 in a freshwater planted aquarium, shown as a color you can read at a glance.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eHow long until the color settles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eGive it about 12 hours to react. Because of that delay, the color reflects your CO2 level over time rather than the last few minutes.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eDo I need to refill it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eYes. Replace the indicator liquid about every 30 days so readings stay accurate. Refill bottles are sold separately.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eFreshwater or saltwater?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eFreshwater planted tanks. CO2 monitoring is for aquariums that inject CO2 for their plants.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"Default Title","offer_id":48910632222939,"sku":"17561","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_56cae326-3191-45cf-9bb8-2659787ba082.jpg?v=1782478803"},{"product_id":"fluval-bio-co2-diffuser","title":"Fluval BIO CO2 Diffuser","description":"\u003cp\u003e\u003cstrong\u003eFluval Bio-CO2 Diffuser\u003c\/strong\u003e disperses CO2 into your planted aquarium as an ultra-fine mist for maximum uptake by your plants. A high-quality ceramic disc breaks the gas into tiny bubbles that dissolve quickly, while the clear acrylic body stays discreet in the tank. It pairs with the low-pressure \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-pro-systems\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 system\u003c\/a\u003e (or a compatible low-pressure CO2 source) to give your plants the carbon they need for lush, healthy growth. German engineered, with two suction cups included. Choose the 125 for aquariums up to 125 L (33 US gal) or the 250 for aquariums up to 250 L (66 US gal).\u003c\/p\u003e\n\u003cp\u003eRound out your planted-tank routine with \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eplant supplements\u003c\/a\u003e and browse our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003elive aquarium plants\u003c\/a\u003e.\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 style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic disc diffusion.\u003c\/strong\u003e A fine ceramic membrane turns CO2 into a micro-bubble mist for fast, efficient dissolving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter plant absorption.\u003c\/strong\u003e Smaller bubbles linger in the water longer, so more CO2 reaches your plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear acrylic body.\u003c\/strong\u003e Durable and low-profile, it blends into an aquascape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy mounting.\u003c\/strong\u003e Two suction cups hold it wherever your flow is strongest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGerman engineered.\u003c\/strong\u003e Precise, reliable diffusion built to last.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo sizes.\u003c\/strong\u003e Matched disc sizes for small and larger planted tanks.\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;\"\u003eChoose Your Size\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;margin:0 0 8px;font-size:0.95em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f6f6f6;\"\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eFits aquarium\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eCeramic disc\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;\"\u003eDiffuser body\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e125\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eup to 125 L \/ 33 US gal\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e12 mm (0.47\")\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e27 mm dia, 38 mm tall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e250\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eup to 250 L \/ 66 US gal\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e17 mm (0.66\")\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e32 mm dia, 40 mm tall\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;\"\u003eHow to Use\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003eMount the diffuser in the lower half of the tank, in an area with strong water movement so the CO2 mist spreads evenly.\u003c\/li\u003e\n\u003cli\u003eConnect the inlet tube to your low-pressure CO2 source, such as the Fluval Bio-CO2 system.\u003c\/li\u003e\n\u003cli\u003eRun CO2 during daylight hours when your plants photosynthesize. It is not needed after lights-out.\u003c\/li\u003e\n\u003cli\u003eRinse the ceramic disc every so often to keep the mist fine as mineral buildup collects.\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;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 8px;padding-left:20px;\"\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/fluval-bio-co2-pro-systems\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eFluval Bio-CO2 Pro System\u003c\/a\u003e: the low-pressure, fermentation-based CO2 source this diffuser is built for\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003ePlant supplements\u003c\/a\u003e: liquid ferts to complete your planted-tank routine\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\" style=\"color:#666;font-weight:600;text-decoration:underline;\"\u003eLive aquarium plants\u003c\/a\u003e: the stems, carpets, and rhizome plants that thrive on added CO2\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 style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eWhich size do I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eMatch the model to your tank volume. The 125 suits aquariums up to 125 L (33 US gal); the 250 handles up to 250 L (66 US gal) with a larger disc for more mist.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eDo I still need a CO2 source?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eYes. This is the diffuser only. It connects to a low-pressure CO2 supply such as the Fluval Bio-CO2 system.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eFreshwater or saltwater?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eFreshwater planted tanks. CO2 injection feeds aquarium plants and is not used in reef or marine systems.\u003c\/p\u003e\n\u003cp style=\"margin:8px 0 2px;\"\u003e\u003cstrong\u003eWhat comes in the box?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eThe clear acrylic ceramic-disc diffuser and two suction cups.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"125","offer_id":48935063060699,"sku":"A8476","price":19.99,"currency_code":"USD","in_stock":true},{"title":"250","offer_id":48935063093467,"sku":"A8477","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/image_9a96417e-3bd4-4b50-bfc3-3b1b6e427fcf.jpg?v=1783000381"},{"product_id":"sera-co2-start","title":"Sera CO2-Start","description":"\u003cp\u003eThe \u003cstrong\u003eSera CO2-Start\u003c\/strong\u003e is a simple, beginner-friendly CO2 fertilization system for planted freshwater aquariums up to about \u003cstrong\u003e120 liters (32 US gallons)\u003c\/strong\u003e. Carbon dioxide is the most important nutrient for aquarium plants, and adding it promotes lush, healthy growth while gently shifting pH toward the slightly acidic range many plants and fish prefer. The set pairs a discreet CO2 diffusion reactor with sera CO2-Tabs plus, so you can start dosing CO2 without pressurized cylinders or complicated equipment. Part of our planted-tank \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\"\u003eaquarium plants\u003c\/a\u003e range.\u003c\/p\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.06em;font-weight:600;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eHow It Works\u003c\/h3\u003e\u003cul style=\"margin:4px 0 4px 18px;line-height:1.55;\"\u003e\n\u003cli\u003eA CO2-Tab is placed in the in-tank diffusion reactor, where it releases carbon dioxide that dissolves into the water for your plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo pressurized CO2 cylinder required,\u003c\/strong\u003e so it is easy to set up and run.\u003c\/li\u003e\n\u003cli\u003eIdeal for the popular smaller planted tanks up to 120 L \/ 32 US gal.\u003c\/li\u003e\n\u003cli\u003eBoosts plant growth and helps establish a stable, slightly acidic pH.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.06em;font-weight:600;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eWhat Is Included\u003c\/h3\u003e\u003cul style=\"margin:4px 0 4px 18px;line-height:1.55;\"\u003e\n\u003cli\u003esera CO2 diffusion reactor (mounts discreetly inside the aquarium)\u003c\/li\u003e\n\u003cli\u003esera CO2-Tabs plus (the CO2-generating tablets)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.06em;font-weight:600;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\u003cul style=\"margin:4px 0 4px 18px;line-height:1.55;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner-friendly,\u003c\/strong\u003e easy to install and operate with no previous experience needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiscreet\u003c\/strong\u003e reactor that blends into the aquascape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder-free\u003c\/strong\u003e CO2, powered by refillable tablets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in Germany\u003c\/strong\u003e by Sera.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.06em;font-weight:600;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;width:100%;max-width:560px;margin:6px 0;font-size:0.95em;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;background:#E3F2FD;font-weight:600;\"\u003eSystem\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eCO2 diffusion reactor + CO2-Tabs plus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;background:#E3F2FD;font-weight:600;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003ePlanted aquariums up to 120 L \/ 32 US gal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;background:#E3F2FD;font-weight:600;\"\u003eWater type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eFreshwater (planted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;background:#E3F2FD;font-weight:600;\"\u003eConsumable\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003esera CO2-Tabs plus (refill tablets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;background:#E3F2FD;font-weight:600;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eSera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;background:#E3F2FD;font-weight:600;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #BBDEFB;padding:6px 10px;\"\u003eMade in Germany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.06em;font-weight:600;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\u003cul style=\"margin:4px 0 4px 18px;line-height:1.55;\"\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\"\u003eLive aquarium plants\u003c\/a\u003e to put the extra CO2 to work\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/additives-supplements\"\u003ePlant fertilizers and additives\u003c\/a\u003e for balanced nutrition\u003c\/li\u003e\n\u003cli\u003esera CO2-Tabs plus refills to keep the system topped up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3 style=\"margin:16px 0 6px;font-size:1.06em;font-weight:600;border-left:4px solid #1E88E5;padding-left:8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eDo I need a CO2 cylinder?\u003c\/strong\u003e\u003cbr\u003eNo. The CO2-Start uses tablets, so there is no pressurized cylinder to buy or refill.\u003c\/p\u003e\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eWhat size tank is it for?\u003c\/strong\u003e\u003cbr\u003eIt is designed for smaller planted aquariums up to about 120 L \/ 32 US gallons.\u003c\/p\u003e\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eIs this for freshwater or saltwater?\u003c\/strong\u003e\u003cbr\u003eFreshwater planted aquariums.\u003c\/p\u003e\u003cp style=\"margin:6px 0;\"\u003e\u003cstrong\u003eHow does CO2 help my plants?\u003c\/strong\u003e\u003cbr\u003eCarbon dioxide is the key plant nutrient. Adding it supports stronger growth and helps maintain a stable, slightly acidic pH.\u003c\/p\u003e","brand":"Sera","offers":[{"title":"Default Title","offer_id":49067492901083,"sku":"08039","price":59.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/sera-co2-start.jpg?v=1785958007"}],"url":"https:\/\/squeakysaquatics.com\/collections\/co2-systems.oembed","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}