guys, be VERY VERY careful with heattape. It can get out of control.
i used it to heat my reticulated pythons, and bermese pythons, they where all on a temperature controller. Not sure if the probe slipped off the heat tape or what, but the heat tape burned a hole right through there container (high density tupperware, rated at around 250+*, and melted the carpet under the stone it was sitting on.
might have just been my bad experience, but I'm not really willing to get near the stuff at the moment. Something that can get that hot is not going near my critters.