Ista CO2 Indicator Refill

CO2 Indicator Solution – 10 ml

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.

When used in conjunction with an indicator, this solution will exhibit the CO2 levels in your aquarium quickly. Observe the color of the solution change from yellow, to green, to blue, and address your water and CO2 input accordingly!