OK, now I'm confused. If I notice that one of the crabs is exhibiting behavior that he is going to molt, I put him in ISO, however if he has already dug himself down I let him be? Don't bother him, and don't put him in ISO? I just want to do the right thing. He has been down for about 3 days. I can see the tip of his shell. He hasn't moved. The day before he went down he eat and drank constantly, well maybe not constantly, but every time I looked he was either eating or drinking. Also, I havn't seen another of my guys for about 4 days. I don't want to go digging around for him, but I don't smell that dead fishy smell either. He could be in the hut, but I cannot see into it because of the way I have it positioned. I have only had the hermies for about two weeks, so I wasn't messing with them to give them time to destress. Any suggestions?