BP moving from Hot to Cool side A LOT! What does this mean??

[kitedemon]

Those can get hot enough to give a BP brain damage in a matter of hours and hot enough to kill a BP in only a short time longer.

All UTH's cannot change the temperature of the air inside the cage. They only heat the floor of the cage. This is why you have to have a probed thermometer, otherwise you cannot tell how hot the UTH is actually making the floor of the cage.

Unregulated UTH's are also a pretty big fire risk.

What UTH are you using? That are running so hot.

In all honesty I'd ditch them and get something that does not run so hot like an ultratherm, intelliheat or Kane, so even in a complete failure of everything the temp will never be able to get beyond 110º max too hot to be sure but not the dire results you clearly have experience with. There is no reason to have a UTH that is a high wattage unit not a single one of mine in current use has ever hit more than 110ºF when I run a wide open test on it that is also direct surface temps taken fro the pad.