well if that is the case, i'm screwed haha. Those things cost 20 bucks each at the petsmarts/petco. Well the one issue i have with the acu-rite unit is that the wire is so long and the unit is somewhat big, having it inside the tub, especially a 6qt one, doesn't really give the little snakes much room to work with. I know i can hide the wire under the bedding but the unit is so bulky.