• Complement to CO2 kits or CO2/pH controllers: solenoid valve for regulating the CO2 supply in aquariums
• Simple to use: insert the solenoid valve into the CO2 transport pipe of the fertilization system or mount directly onto the JBL CO2 regulator.
• Targeted CO2 supply: adjustment of CO2 supply by activation of a timer or by CO2/pH controller (timer and controller are not supplied).
• Safe and economical: 12V safety transformer, low heat release (power consumption: 0.8W), saves up to 50% CO2, no noise production, universal electronic power supply.
• Contents: 1 silent solenoid valve with hose clamp nuts and universal power supply

Why do you need a solenoid valve or a nighttime shut-off?
Since plants only need CO2 for photosynthesis during the light cycle, you can stop the CO2 supply at night. To save you the hassle of opening and closing the CO2 cylinder, there are solenoid valves (like the JBL PROFLORA CO2 VALVE) that can be controlled by a timer. In the morning, this timer turns on the lights and the CO2 supply via the solenoid valve, and in the evening, it turns both off. Experienced aquarists quickly recognize that the cost of a solenoid valve is recouped because it saves 50% on CO2. It is always installed between the regulator and the check valve or screwed directly onto the regulator. If you want to use a pH controller with automatic CO2 regulation, you will also need a solenoid valve. It will then not be activated by the timer, but via the pH controller (JBL PROFLORA CO2 CONTROL).

Safe and economical.
With a consumption of only 0.8 W, the valve body barely gets warm and operates with a 12 V safety transformer. The magnet is silent and saves up to 50% on CO2 since the CO2 supply is interrupted at night.