I actually have never had a problem with temps, not for a year, the thing is my bulb went out finally, and the one I had one reserve burned out as soon as I turned it on. So that wasn't cool. I have a regular bulb shining overhead, but it is not strong enough to emit much heat. I am going to try to get out of class early and make it by le petco and make them give me another bulb, for free. Whish me luck.