no, the ones that I have on a bottom are for my snakes, but the thing is for my pacman right now I have 2 small sized UTH attached on a side, but even for that small tank the temp are never higher then 70, when the lamp is off, the thermometer is attached close to UTH, so it is probably even lower that 70 in the other side... hm... will try to attach another one and play with lamp dimmer to get the temp you are advising. will try to do what you're advising on a food too. hope it'll work.

thank you