Hi all. I've had my tank set up now for a good six months. In that time all of my crabs have gone through successful molts. Lately all of them have been out and about and I wonder if I should do a substrate chance and cleaning even though the tank still seems clean. The thing is that I worry I'll get into a pattern in the near future where I don't know if one or more crabs is molting, and I won't want to disturn anyone. With five crabs in there there is a good chance that there will almost always be one who is molting. Just wondering what you all typically do. Thanks.