HEre is a video of me feeding my fish. This is all the tank is fed. Everything I put in my system gets eaten many times. Eventually it is broken down and consumed by animals that produce eggs and larvae or it is broken down and grows bacteria. Since i dont feed anything else and my corals are all fat and sassy I believe my corals eat this plankton soupe if they eat anything at all.
http://www.youtube.com/watch?v=ESpeZI8s5Qo
On this same note. I dont feed my corals. I feed my system. IF the corals eat they eat food the system produces.