HCA: Hermit Crab Association

So, update. I have been leaving the smaller tank alone for the most part. Just replacing the food and water. Today I noticed some mold in a couple spots so I scooped it out with a plastic spoon and where I scooped completely collapsed as though the sand were bone dry. I poked around in a couple othe...

Yes, I did mix it with water until sandcastle consistency. I noticed that the very top layer would dry out sometimes but the rest seemed fine. I removed a couple pieces of cholla wood today and the holes that they made did hold up

So I had five small crabs living in a little 10 gallon tank, and I quickly learned they i had them in less than ideal conditions. Between the tank size and the fact that i used only play sand as a substrate. My temp and humidity were fine, I had both water pools, and fed them a variety of foods. I l...