With the Eheim pHcontrol+e you can easily monitor and optimize the pH in your aquarium via a smartphone, tablet, or PC/MAC simply via a WiFi connection and your web browser. A pH sensor measures the current pH value of the water, and the Eheim pHcontrol+e automatically provides the necessary CO2 supply. By controlling the magnetic valve (included) connected in series to the CO2 system it adds as much CO2 as required until the desired pH value is reached. To achieve this you must connect your CO2 system, i.e., a CO2 bottle via pressure reducer as well as magnetic valve and a CO2 diffuser. The Eheim pHcontrol+e has a day/night control and can be linked to the lighting control Eheim LEDcontrol+e (see the Eheim DIGITAL family).In addition to light, nitrogen, phosphate, trace elements, etc., the plants in your aquarium need CO2 above all as an important nutrient. The better they thrive, the more oxygen they release, which the fish need to breathe. Thus, the Eheim pHcontrol+e indirectly prov