This is my first post so be gentle .

I just got a Caye Caulker (caye caulker, caulker caye, cay caulker caulker cay, ive always gone with caye caulker but ive seen it spelled different ways) last night and got everything set up, but I tend to worry about every little thing so I wanted to ask a few questions and get some general information.

1. What should hot side temps and humidity be, I was told to keep the hot side at 88 to 90 and the humidity between 60 and 70 but just wanted to hear from people that keep them.

2. What are some good ways to keep humidity up. My humidity keeps falling to 30 which I know is too low and when I spray it goes to 81 but falls pretty fast. I have a screen top with a towel over it right now. I bought some Sphagnum moss, what is the best way to use it?

3. I was told that a 40 gallon tank was all I needed for an adult as long as we got him out multiple times a week and that all I needed to get the correct temp would be a 150 watt ceramic heat emitter, but the temp on the hot side is staying at 81, should I get a UTH?

Thank you all for any advise you can give me and I hope any information that I get will allow me to help someone else in the future.

(I also need help naming him)