How Long Do You Run Co2 In Grow Tent?
How Long Do You Run Co2 In Grow Tent? A 100% air exchange every 2 hours (air leakage through cracks and doors) is normal in most grow rooms and tight greenhouses, so you will use . 448 cu. ft. of CO2 every 2 hours, or about . Should you run CO2 at night? The justification