Hi all, im looking to add co2 to my set up and trying to figure out the best option for my set up. Im using a sealed room with an 8" exhaust line. I would like to use a co2 tank instead of a burner to start for fear of to much heat, right now i maintain at 80 degrees and 40-45 rh. I have a 20# tank, regulator, timer,hose and fittings, my question is how to do this properly. Do i shut down the exhaust fan when i add the co2, and for how long etc. How long should i set the timers for, like co2 on for 15min every hour? Been growing successfully for many years, but never used co2 before. Any help would be appreciated. I will post pics of the set up as soon as i figure out how to add them...