Quote Originally Posted by Spoons View Post
Could it be that it gets too cold in my room at night (It's a pretty segnificant drop) for the thermostat to heat the hot spot?
Only if you have an unreliable T-thermostat which your would fall in this category, or are using a heat pad that does not get above a certain temps.

If you want stable temps you want Herpstat, Helix or Vivarium Electronics and some heat tape.