The EHEIM CO₂ Long-Term Test Set is a complete set for continuous monitoring of the CO₂ content in aquarium water. The set is designed for both freshwater aquariums with plants and aquarists who want optimal plant growth without risking too high or low CO₂ levels. With the included indicator liquid, you can visually read the CO₂ concentration through color changes - green indicates the ideal level, while blue means too little CO₂ and yellow too much. Suitable for all freshwater aquariums with plants where CO₂ addition is used to promote growth and health.
