I always just plugged the controller into the same power strip as one of the lights, so the controller didn't get power if the lights were'nt on
rhizome Reviewed by rhizome on . co2 controller worth it? I was thinking about CO2, I've seen the manual valve release for £145 which seems ok, but the digital controller is another £120 on-top. Question is can I easily do it manually or is it too much hassle? :) Rating: 5