I baited my small trap for an emerald crab I thought had died, but is still in there eating my coraline
Darned if my grey brittle star didn't sneak over and have a nice dinner from the trap
Will try again tonight, though, in a different location.
Tearing down a tank is the last resort method of crab removal. They have hiding places so deep in the rock that you may not even be able to find it. We did two passes on the rock with flashlights and me in my reading glasses before we caught the crab out of the new CB seahorse tank. We were very, very lucky imo.