Rotifers and Oyster feast are best for corals with small mouths, esp favia/favites, flower polyps, zoas etc. For super suns, cynarina, lobos etc with sweeping tantacles, may I suggest mysis shrimps and brine shrimps. Interestingly GO feeds their corals with fish eggs from supermarkets. It is highly effective (look at their corals!) but increases nitrate in water tremendously as our tank is not as big as theirs.