HCA: Hermit Crab Association

Mine seem to hang out together 50% of the time. That seems healthy. I'm a little worried that come shell change time they may fight because they are EXACTLY the same size, and I've heard that leads to shell fights. I should be able to avoid this by providing a ton of empties, right?

Cool. Thank you. I think I'll stick to two for now, but I'm glad to know I could get another if I decide to.

Whew, good. Now, would it be okay to put aother one in there?

I have two purple pinchers in a twenty gallon tank and was wondering, I keep hearing people say three is a minimum. Should I get a third? These guys are medium according to the bullseye size chart so I think there's enough space, they seem fine. Please let me know, I don't want them to be unhappy.