{"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","url":"https:\/\/squeakysaquatics.com\/products\/fluval-co2-indicator-set","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}