feed them anything meaty, raw, and seafood. even cylcopseeze works well. jsut place it in the center and it will take it in. as far as how often, once a week should be fine.
elegance corals done have the best survival rate in captivity by the way.
cyclopse eeze is basicly a brand. it is frozen copepods and other zoo plankton. raw and meaty means silversides, krill, shrimp, pretty much anything that is saw, meaty, and seafood. lol
fish love cylcopseeze as well. everything in your tank will go crazy when you put it in there. just make sure to keep it frozen and when you put it in your tank, don't let water get on the pump or it will freeze