Since I put Lancelot's vivarium up on the wall, the temprature has decreased quite dramatically. I can't seem to find any reason for this, unless my thermometer is broken, but that's rather unlikely. The heat mat is still the same, everything is as it used to be, but the temps dropped to about 71F!!! I'm not going to brumate him this year, and right now I'm frantically searching for any kind of heating equipment that could help. A heat lamp is impossible to install with my current setup, so the only things I can think of are a larger heat mat, cable or a heat rock. But then again (and this is the weird thing) I noticed that when the temperture is lower, he sheds and eats much better than when they were higher. He shed just yesterday, a perfect, complete shed. I haven't seen one this good in months! And his appetite is as good as ever. When the temps were higher, he kept having problem sheds etc. He seems to thrive in cooler temps. Is this normal? Should I leave things as they are and just watch him closely, or should I try to increase the temperature a all costs?