I have a 2’ x 4’ x 5’ tent and a 2’ x 2’ x 5’ tent in basement. The ambient temperature is about 70*F. I have an inline 203 cfm fan that is pulling air from both tents and extracting it to an outside window. I recently installed a second 135w qb light in the larger grow tent, (two plants that are about two weeks short of flip). Since I’ve installed the new light, heat is an issue in the larger tent.
Do people run their fans all day long? Is this normal? I had been running it for 15 minutes every couple of hours. I’ve switched to running it 15 minutes every hour now, but it’s still not quite enough.