Quote Originally Posted by Reesy View Post
My question is with ambient temps at these ranges, do I even need UTHs?
During the day, no. Actually, an ambient of 90 is too warm and may stress your snakes out (I recommend a daytime ambient in the low 80's). When it gets that warm, I would recommend bringing them inside an air-conditioned space or maybe putting a fan out in the room, if that's possible? During the night, not normally, but high 70's isn't warm enough for digestion, so be sure they have a basking area of at least 88 for at least two days after they eat.

As has been said, hooking the UTH's up to a thermostat is a great way to regulate temp fluctuations in the room; it will turn on the UTH's when the cage needs to be warmer and turn them off when the cage is warm enough.