Reef safe snails:
-Nassarius (burrow in the sand, and come out to feed)
-astrea (move around on glass and rocks eatting algae)
-Turbo (large, and sometimes bullish if coral that is not secured gets in their way, but they will mow down hair algae)
-cerith (similar to the astrea in behavior, but has a different shaped shell, smaller and usually cheaper).
I like a large quantity of snails. I don't have near enough currently, but I would try to do 1 per gallon with a mix to whatever ones you choose. You can usually check the online vendors to get better prices for a variety pack. Good luck with the hermit extraction. Feeding them croceas would be an expensive diet
