What are the pros and cons of both Baha Red Leg hermits and Red Scarlet Reef Crab. Currently I have 10 trochus snails, some strombus snails, 10 blue legged hermits. Its a 90g reef and its time to stock up again. I am also getting 12 nassirus snails and 24 baha(cerith) snails. I get some hair algae on the glass and some diatom is present.