I was wondering what to use as a night time heating source. It went from summer (mid 80's) to almost winter (high 60's) in one day. Thats sort of typical here. Anyway I wanted to know if tortoises can see infared light. I've read both that they can and that they can't. I tend to turst the people on this forum more than most so I was hoping someone could give me some insight. I just made Tex a new tortoise tablen which came out very nice and I think he loves it. I put a heat cable down but it doesn't seem to be doing much. What do you guys recommend as a heat source for night time?