I second this. if you do some searching on the forums you'll find stories of snakes that actually got stuck inside aquarium decor. These guys can and will squeeze themselves into places you'd think impossible - and getting them out can be a trick. I would recommend something like these: https://www.amazon.com/dp/B00UCDIBMY...528219186&sr=2
I know they aren't as pretty as the decor, but they're functional, inexpensive, and safe. Get a few so you can switch them out for cleaning![]()
Also, did you say what your humidity was and/or how your were monitoring it?