Hello guys,
Just wanted to share that I have recently hooked up all my heat sources to a Rheostat as well.
What this does is it safeguards your animals against catastrophic failure in the on position, for example, the heating element you are using may be very powerful, such as a UTH. The UTH could likely still provide your snake with enough heat at somewhere around 40% of it's power while hooked up to a Rheostat, that way if the thermostat fails in the "on" position, then UTH will only use 40% of it's power, and it likely won't kill your snake.
Thank You!