DENNERLE pH4 calibration solution 50ml

CO2 control with electronic precision. The Evolution DeLuxe pH controller is the most advanced version of the DENNERLE CO2 system. It continuously measures the pH value in the aquarium and automatically regulates the addition of CO2 via the connected solenoid valve (DENNERLE CO2 night shut-off).
This fully digital precision device offers maximum functionality, safety and convenience. Operation is very simple: 1 button = 1 function. The pH controller works in the acidic range (e.g. for discus fish) as well as in the slightly acidic range (e.g. for tropical community aquariums) and in the alkaline range (e.g. for Malawi/Tanganyika aquariums, seawater).
The device is completely waterproof and therefore complies with the latest legal regulations.