I love my bio cube but.....

Update:

Emerald crabs keep knocking corals off the rock work. I am starting to think I would be better off keeping corals in the bio cube and using the 40B for a FOWLR.

Any suggestions on species for a 40? I need to make sure they will get along well with the emerald crabs as I kind of like watching them so want to keep them around.
 
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