So I installed my 400 w HPS in my indoor grow tent, 4’x3’ with three clones going. It is my first time adding the HPS light to the room and my tent increased wildly in temperature and dropped a lot of humidity. Before humidity was 40-50%, with temps 70-80 degrees. Now I am getting as low as 28% and temps as high as 90. I made some modifications to add a humidifier and a fan. Temps are still ~84 degrees and humidity as of right now is 37%. I am currently running an 80 cfm exhaust with a 4 in duct leading outside. I am also in a dry climate and in the middle of a heat wave. I’m hoping it cools off soon.
Any solutions without buying a cooling tube? The light is 18" from the plants and I don’t think it can go any higher without losing the sweet spot for lighting. Or should I just leave it?