I do feed pellets (automatic feeder and do by hand as when I walk on the dock they come a runnin' ... \:\) So far I've only put bluegill, bass, catfish and of course the forage fish. Not sure yet if i want to mix other stuff, I heard the crappie have teeth and will tear up my other fish, don't know much about the tilapia yet (may change my mind when I see the video that is downloading). Waiting for the video to download, Agent....my computer is not so fast. Still waiting...hope one day I don't have this dial-up...so slow...