I recently added a hermit crab (don't know what kind - LFS
don't know either - I live in Malaysia it's often like that here...lol) into my reef tank. It does an excellent job of cleaning up but after a few days I had to move it to my smaller tank because it was clambering up and knocking over my corals, and picking up after him is a pain not to mention potential damage to corals.
1) I'm wondering how people cope with these critters in their reef tanks? Mine has the shell about the size of a squash ball. Maybe I shouldn't have been so greedy and gotten a smaller one.
2) Hermit crabs hijack the empty shells of other critters right? So if one in the tank outgrows its current shell, being a closed system, am I supposed to provide it with a new home?? (sounds like a silly question)