HCA: Hermit Crab Association

CL has given really good advice. Just to clarify, the Hermit Beach Sand is one of the few products marketed for crabs which is totally safe for them (even tho calcium is listed as an ingredient, it is not the harmful calcium sand). It will get expensive to buy enough to make your substrate deep enou...

From your description, your tank set up does not seem to be missing anything.
They do go through a lot before we get them, so his inactivity may be from previous stressors, not from anything you are or are not doing.

You really don't know. That's why it is important to offer 3 to 5 extra shells per crab, then they can choose which shell and when.

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.

A few more questions... As was asked, how big was the pool? LIke how much extra water went into the sub? Is it soaking wet? Is there standing water in the bottom? Do you have any crabs underground? If so, they could drown, so you may need to dig them up. Be ready to isolate them, in case they are mo...

You can safely add substrate even when they are underground - many people will add up to an inch a day or more, as long as you don't pack it down. The way your tank is set up with EE on one side and sand on the other is fine - some people mix the two or use more of one than the other, but it certain...

I would pick up the shell and have a good look to see if the crab is inside or not.

Actually, HCA does not subscribe to the ten gallons per crab 'rule' - it depends on the size of the crabs.

viewtopic.php?f=26&t=92541

Also, there are many safe woods for crabs, not just the ones Silver listed.

Welcome to the forum! No, you shouldn't move a crab into a different tank to molt. As long as your tank is not overcrowded, and you have deep enough substrate, it is better to leave them in their home tank. Your substrate should be at least three times as deep as your largest crab. And depending on ...

Yes, that was probably me LOL! When my sub has been a bit dried out on top, I have added some water along the edges. Some people will add half a cup or more at a time, but I have always been a bit more cautious, adding probably a quarter cup, just poured along the edges in different spots around the...

Cats for pets = hair on everything and cat litter tracked on the floor.
Dogs for pets = hair on most things, and dog toys un-stuffed on the floor.
Crabs for pets = sand in the sink and on the floor, and trashed tanks!

Unfortunately, as Crabs Lex said, if your crab smells really bad, and is not moving, it is probably dead. Crabs can molt in the same tank successfully, as long as conditions are correct and it is not over crowded. Your substrate should be deep enough that the crabs will completely bury. They make tu...

Have you checked out the nutrition and the safe/ unsafe foods care sheets?

The commercial food care sheet has info on which ones don't contain anything potentially harmful:

viewtopic.php?f=25&t=92555

There is really no way to know if they are molting or de-stressing, or just digging around for fun. Time will tell.
As long as you have enough substrate, and your tank is not over crowded, the other crabs should not bother the ones who are under ground.