I have 2 dart frog vivariums that are no longer fitting in my frog room. I had moved away from UTH a long time ago due to problems maintaining humidity. I have been using CHE near the enclosures, however twice the glass got too hot and I am worried about it cracking. I also have glass partially covering the top so that is an issue for heating with a CHE.

One is 12x12x18 and the other is a 29 gallon tall. What is everyone else using? I know I will need a thermostat either way. If you are using an UTH please let me know if you recommend a certain brand.

thank you