is this a stupid idea?
i think it is kinda cool. since i have a thermostat.
of course you could just use two timers and have the fans on one and the co2 on the other. but i like this idea cause it keeps temps in check and i don't have to spend another 100$ or so for a new controller.
some one say its kinda cool, i have low confidence and want to feel cool.
demoreal Reviewed by demoreal on . DIY co2 controller if you own thermostat. i had this idea to build a co2 venting controller. items needed: -light detecting outlet - about 20$ -thermostat you plug in your fans to the thermostat and have them go on and off. you also have a light plugged into the thermostat one that goes on outside the grow room. a small light the smallest cfl you can find. plug your co2 into the light detecting outlet. now you can kind of see how it would work. when the light goes off and fans too, the light detecting outlet would turn Rating: 5