Ive had one for almost two years, and you will learn that even with feeding heavy, they will still nip. Now as to what type of corals, that depends, mine likes bubbly tissue like acans, brains, etc but others ive seen will nip at zoas. Ive just accepted it and just purchase zoas and sps. So typically id advise against them unless your ok with just not having that type of coral in your tank.