Current air flow is as follows:

I have the previously mentioned 8 in duct booster pulling cold outside air into my setup.

I grow vertically hydroponically, utilizing a vertitube. My vertitubes hot air is being pulled out by a Vortex 6 in. fan through a closed loop.

I also have a 6 in. Vortex fan on my charcoal filter exhausting.

nighttime temp is steady 74. Higher than normal because of my day temp being so high. Compensating for temp change, preventing mold? At least thats my thinking. Its definitely cutting down on condensation buildup after daytime.
SyDsHo Reviewed by SyDsHo on . Over heating growroom Hello all. I'm having a hell of a time getting my daytime temp below 80. I thought it was fine for a week, then realized my probe wasnt working properly. Since getting my new probe, I had to add an eight in in line duct booster for my outside air intake. It was previously a passive intake. I was running so hot I added to see what kinda difference it would make. It shaved about 4-5 degrees. So currently, Its about 75 the first two hrs. Up to eighty for about five to six more hrs. Then crept up Rating: 5