Quote Originally Posted by bearhart
They are not unable to sense it. I know this because I've seen mine jump when I've turned the lamp on before. My guess is they can't really see it but they can sense the sudden heat source. I leave mine on constantly and it doesn't seem to bother him.

Yeah the set up i h ave right now is 12/12 incandescent white light (gives off a lot of heat) red light 24/7, UTH 24/7