Ahh sorry it took me a bit to respond-- we've been a bit busy with thanksgiving and all, haha.
I have definitely read the Care Sheet thread multiple times as well as read through other specific forums to double and triple check that I'm doing things as correctly as possible-- I was so paranoid I wasn't doing things correctly at first, and that paranoia has only decreased slightly, haha. Hopefully once I have the temperature regulated correctly I'll be less worried.
I do have a thermometer/hydrometer and we make sure to keep the humidity levels around 80% or so-- the temperature unfortunately had been about a constant 70 degrees but recently has gotten even cooler.
I don't remember exactly where I read what size uth I would need for a 10 gallon tank but it was definitely the wrong information. I also got a moon glow bulb and heat lamp but that doesn't seem to affect the temperature at all. Currently the uth is a small square that is mostly above the substrate but not contributing much warmth as far as I can tell. I got it a few days after getting everything set up as a last minute thing-- the day I went to petsmart to get everything I needed I asked an employee about heating the tank and he told me he had 3 huge crabs and hasn't heated their enclosure in the 5 years he's had them, and I left thinking temperature wasn't as important as I had read. Then I read through things on here more and realized that guy was wrong (which is irritating considering he works at a pet store but what can you do?) and went back and bought the smallest uth they had.. I don't think it's affecting the temp at all, though.
And for pictures:

Franklin

Max Jr. He was stuck between the coconut fiber and the side of the tank-- it was tricky figuring out how to get that stuff to stick to the glass without coming loose.

The only picture I have of Shelly since he disappeared into the sand right away.

Pitiful but it's the best picture I have of Sandy because he's pretty shy lol. That's his most current shell of choice. The plastic we've got around the top to help with the humidity was a bit loose as well :/

And a picture of the tank... It's a bit different since I took it, though. I've added more sand and removed some of the fake plants and the Legos. The plants fell over a lot and the Legos seemed slippery. And we didn't have the thermometer/hydrometer yet. Lots more shells... things like that lol.
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