Im setting up a co2 tank in my room. I was just wondering how quickly the plants use up the co2. I dont have a co2 meter so i cant test. Im just trying to figure out how often i should gas my plants.
im using 25lb tanks hooked up to the regulator flow valve & solenoid unit. I already figured how to get the room up to 1500 ppm... I just need to know how often I should gas them/ how fast they use up the co2
Best to use it all the way, but cut it to 750 ppm in the last two weeks. YOu'll need a meter for this, or just get a Sentinel CHHC-1 for the same money and use it as your whole grow controller.
its a crapshoot without buying a controller, the cost off the controller will be recouped in a grow or 2, co2 is really only beneficial once everythting else is dialed in so IMO you would just be wasting it by blasting it on every now and then