Fluval CO2 Indicator Set

The Fluval CO2 Indicator Set provides an easy way to monitor carbon dioxide levels in aquarium water, visibly changing color to indicate low, ideal, or high CO2 concentrations. Each indicator solution lasts up to 30 days, helping maintain optimal CO2 levels for healthy live plant growth. The kit mounts to the aquarium glass and includes a glass reservoir, suction cup, and indicator solution for simple setup.