Empty Fancy Hermit Crab Shells

Clean up crews which include reef hermit crabs are a vital part of a healthy reef aquarium! Reef hermit crabs will eventually out grow their current shell, when this happens they'll leave their current shell in search for a new one; if they cannot find a new properly fitting shell, chances are they will die or quickly become food to large resident reef fish. Make sure you have several empty shells in various sizes in your reef aquarium.