I'm interested in the same thing for the same reason.I don't want to have to run an airconditioner when I have my grow in a cool basement.Seems like a sealed room would be alotta extra work and equipment and$ etc. etc. I think you can run it .You have to time time your fans to coincide with your co2.Disperse it above your plants as it's heavier than air and sinks through yor canopy.I think you want a little air movement at certain spots to maximize co2 distributions.
El Loco Smoko Reviewed by El Loco Smoko on . CO2 anyone? I'm hoping someone could step forward and tell me what differences it would make in my pals growroom. He is not computer savvy and asked me to find out. Room is 20x8 with a 7 ft ceiling. It has 4 1000W for flowering. From what I have heard, It doesn't increase yield, it just grows them to maturity quicker. Is that correct? Would the room have to be airtight? Any info will be appreciated. Wallhofen Rating: 5