I made a massive mistake...

[Hugsplox]

I thought RHPs just handled the ambient temperature like a CHE does (only without completely zapping all the moisture out of the air). Will I not still need the UTH?

Also took a look and, yeah that nearly $200 price tag is pretty steep after the amount of money I've already spent yesterday. Not that it particularly matters atm as they seem to be out of stock until May. Does it regulate two separate heat sources as the name seems to imply at least?

It does, the Herpstat 2 has two plug ins and will regulate two heat sources, which is why I got a 2 to use for a second enclosure. If you only intend to have one enclosure with one heat source you can get away with the cheaper Herpstat, it's just up to what you want to do long term.

As far as the what the RHP does, it pushes heat down, but the PVC enclosures holds heat way better than a glass tank. The inside of the warm hide, directly under the RHP stays at about 90, the hot side is at 86, cool side is at 78. All off JUST a RHP, no UTH needed.