I live in Southern California, it's pretty warm here in the summer. Lately it's been abnormally warm. I've noticed that Vicious, my young corn, doesn't even use his hide anymore since it's located above the heater. Whenever I find him he's burrowed in the aspen on the opposite side of the heater. Is it safe to assume I do not need my heater on? It's an undertank heater, one of the cheaper ones, so it doesn't have a dial to change the temperature with. Thanks =)