I purchased a new crab on Sunday and by Sunday night he had dug under. I have looked under the to check on him and it looks like a lump of crab laying next to his shell so I am assuming he molted because I notice no "death" smell. My question is when should I move him to ISO? I have four out of my six crabs dug under right now and I caught one of the others starting to dig right next to what I hope is the molted crab. I don't want anything to happen to him if he is definitely alive and molting. Can you tell I am unsure.....this is my first molt so I am not sure what to expect except for what I have read. Thanks for any advice.