Try hitting the water with a temp gun as it comes out of the mister, or right when it hits the wall of the enclosure, or the substrate. It's not 120F, far from it.
When the water comes out, misted, it drops in temp instantly and dramatically.
However, I am not one to tell people what to do. I can only give my suggestions.
Please, if you have evidence to oppose what I am saying, I would like to see it, and if you can prove me wrong, will be the first to admit it, and happily.
I don't want to hurt my animals, or encourage people to hurt theirs, believe me. That's the last thing I want.