I was told by the breeder I got my Sulcata from that I should keep the heat lamp on at all times in her enclosure. I have been doing this since I got her. What I want to ask is...should I keep doing it or should I be turning her light off at night to let the temperature drop a little? When the light is on, depending on the room temp. the temp in her enclosure goes from 90-100 on the hot end and 75-85 on the cooler end.