ISTA CO2 Indicator Solution

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When used in conjunction with a CO2 indicator, this solution will exhibit the CO2 levels in your aquarium quickly. Observe the color of the solution change from yellow, to green, t o blue, and address your water and CO2 input accordingly! Monitoring the carbon dioxide levels in your planted aquarium is vital to its success! Too much CO2 may harm your fish, and too little will decrease your plants growth! This CO2 Indicator Solution is super easy to use, and will help you maintain the levels in your aquarium. Simply inject 1CC of CO2 Indicator solution into the cap of CO2 indicator. Adding aquarium water is not necessary. Recommended to be changed only once a month. Not necessary to change solution every time a maintenance is done to the aquarium. Show more