Hello all, All I've got in the box is 4 26w CFLs. Getting Temps around 87-89 with those on. Walls are covered with Mylar. 2, 2" intake holes and 1, 4" intake hole. Exhaust fan is a 160cfm duct fan. Driving me crazy. Already lost a crop (can't be certain if it was the heat, but I don't know). Room temps are about 75 at night and 80 during the day (because of the box, the rest of the house is 75 daytime too). Any help? I don't want my girls to die again... Pictures and more details in this post: http://forum.grasscity.com/indoor-marijuana-growing/913869-first-grow-cfl.html
If 89 is all the higher your temps go, you should be fine. 90 isn't the death temperature for marijuana. It isn't the best for it though. Just make sure everything that you can control is controlled to the best environment you can get.