Hi I am having simular problems lol I an at end of grow and can't get it right no matter what I do. It's a 5x5x6 roof tent. I have it in a tin shed in florida, I know I know that's all I could come up with. SO I HAVE 8 INCH ADJUSTABLE INLINE FAN WITH CARBON FILTER HOOKED UP HIGH IN TENT VENTED OUT TENT AND THREW FLOOR, OT A RAISED SHED. SO I HAVE lG portable ac in their vented out bottom vent then out another window. I have dehumidifier 35pints running 24hours because humidity is crazy. I just can't get it right inline fan goes on 60seconds every 5 min. When on humidity goes up even more. As far as fresh air I just crack the zipper on tent. I don't know what else to do leds are not that hot. What do you think? I am almost done and don't want to screw up now.