Burmeseanswered grow question 4 years ago Hey friend, I would say Portable air cooler will do that.I’ve done that before.It will cost around 50~100$ which using cold water to cool air.I compactly glue a cartoon box at the air cooler fan without any air leak.And then make a hole on the box for about 4” or 6” depends on your grow tent inhale line.All the cool air from air cooler will go straight to the tent and it will also reduce humidity of the tent.I can reduce my grow tent temp from 30~34C to 24~26C when light on.Hope it will help.Happy Growing.. ✌️