HCA: Hermit Crab Association

how do you know if your hermit crab is done molting and I had to separate my other crab because I have a 5 gallon tank for 2 crabs . I was wondering if it was ok to have two hermit crabs in a five gallon tank while one is molting .

If your substrate is deep enough it should be fine. When the substrate is shallow if is easy for other crabs in the tank to dig them up and disturb them!

I have a lot of substrate and I separated my other crab but there isn’t much heat , all I am using is a vanity light . So can I put the other crab back on the main tank

A crab needs to shed it's exo, eat it, and harden up again. Did your crab surface molt? Or do you mean that the molting crab is still under ground?

A 5 gallon is only big enough for very very small crabs.
Here is the HCA guide for how many crabs in what size of tank.

viewtopic.php?f=26&t=92541

I have one tiny crab and one small crab . It’s still underground and I think it might be done Sheding but it is underground and I can’t find it I have Doug a small area just to see if he is still there but he has moved .

I have one tiny crab and one small crab . It’s still underground and I think it might be done Sheding but it is underground and I can’t find it I have Doug a small area just to see if he is still there but he has moved .

If it is under ground, leave it alone. Do not dig or go looking for it, just wait for it to come back up on it's own.