I use an UTH on a thermostat set to 94f, and the surface of the glass inside the tank is usually about 90f. In the past few days, I've noticed that the ambient temp is getting WAY too cold as fall's coming around, especially at night. He's still staying in his cold hide for some reason, but I'm worried about him. I'm thinking I need a CHE. I've never had one before, so I have a few questions:

I've heard mixed things about whether or not CHEs need thermostats? I know that a lot of bearded dragon owners say it's not necessary, but I've also heard that ALL heat sources need to be regulated.

If it needs a thermostat, would it be safe to switch off my UTH and just use the CHE on the thermostat? There's lots of debate about whether or not belly heat is necessary.

And can CHEs just go in any sort of fixture, as long as the wattage fits?

Thanks for the help!