Ambient Temp or 50/50?

[revxus]

We do both. Keep the facility at 78F and provide warmer basking spots in all the cages. Disadvantages to high ambient temp are heating costs and it gets really uncomfortable in there in the summer. A huge advantage is that if electricity fails to one of the racks, the snakes don't get too cold waiting for us to notice.

I guess I should have been more clear the way I asked... but your answer makes sense. I keep my snake room at an ambient temp during cool down, and provide a hot spot after their brumation.