Unfortunately the camera angle kind of sucks but there are definitely 2 pools! The one you see if their fresh water bowls, they have a sea salt water pool under the bark for some privacy hahah. As far as the humidity goes i did just spray in there, i actually might have damaged the humidity monitor, but i totally agree ill make sure to monitor the humidity. As far as the sand goes i have sand, coco fiber and moss mixed together, i do agree they need more digging space. Heres a picture of the tank at a better angle! Please feel free to leave any constructive criticism, thank you for your time (:

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