Buy the solenoid valve for give CO2 to plants
 
Solenoid valve for irrigation to set and control the opening and closing of the water and liquid supply according to the pre-established times. The use of a digital timer is recommended. The product is supplied complete with connector, wire, plug and fittings. Just connect the solenoid valve to a timer, set the time intervals needed to get the desired value.
The administration of Co2 inside the grow room is essential to favor the process of chlorophyll photosynthesis.