Thanks for the replies. We had no intention to induce hibernation and were disappointed when this seemed to be the coarse he took. The room was kept at around a 67 degree average which we felt was plenty warm to not have him hibernate. I do not know if he hibernated or not, it was purely speculation since he would disappear for what appeared weeks at a time.

I have read that the ideal temperature for him is around 76 degrees however above 80 can be dangerous. This leads me to feel that being able to adjust the light we get him will be necessary (plus the top of his tank contains some plastic that I would not want a direct heat source to touch). I put a space heater in the room for now to bump up the temperature at least a little bit. I will get him his red heat bulb ASAP. Can you think of anything else to help this little guy out?