Quote Originally Posted by Joefarmer
Honestly, I forget. I need to get more refills and re-check. The room is not sealed. There's a 4" pc fan for exhaust on 24/7. To compensate for the exhaust should I ramp up the CO2 or put the fan on a timer and keep it off when C02 is on? Overheating is not an issue during winter.
you really want a sealed run when running co2. also, you want higher temps. the higher temps increase the plants metabolic rate which allows it to use the extra co2 that you are pumping in.

at least put the fan on a timer. there's no need to waste all that co2. not to mention it's a health hazard!

good growing!


-shake