That might really be the problem… but I really dont know what else to do to lower the temperature… Im already using an extractor fan turbo, to get the heat out thru the window, a different fan to bring new air, 2 regular fans to circulate air, and a potable air conditioner (which is not the best, but I cant move the whole grow to my visits bedroom by myself, for the air con, I take the plants to sleep there at night tho lol)