I've been feeding baby brine, cyclopeeze, golden pearls and an accidental walnut jelly. I think they liked the walnut the best. I'm guessing that if they can eat something that big, then the other stuff should be O.K. I have three brine shrimp bottles bubbling, but they are so tiny, I don't see how they can keep anything alive, that's why I supplement with other foods - not the walnut, that was an unfortunate accident.