My rheostat generally works well and I use it at its min, just to bump the room temperature of 80F to 92~F in the hot side and 82~F in the cool side. I have it hooked to 3" Flexwatt tape.

I woke up this morning and the temperatures in the hot side of my snake's tub was 130F and 100F in the cool side. The temperatures in the room were the same and I had not touched the configs.

I was surprised my snake was alive.

I think I am going to get a thermostat soon.