I have a crocea clam and numerous sponges and featherdusters, plus a mandarin. I feed it for the pods, mainly; but I think juvie pods may be coral food, and more, I think the pods help reduce nuisance algaes, which may or may not help the acros, but I am getting some good growth out of several. Fragged an ac. aculeus last week, and it's already healed and the frag is starting to branch, from a straight stick. The montiporas are getting fragged left and right after 7 months. The more layers of life there are in the tank, the better, imho.