is he still alive?
the cover for the lights may cover the whole tank but they warm air is going up to them, so it is not keeping the heat inside the cage it is heating the cover for the lights. so take the lights off and put a piece of glass or a towel or anything that will cover 75% of the tank, so the heat and humidity stay IN the tank. i would get in your car and find a 24 hr walmart and go pic up a acurite now.