I have a Powder Blue Tang in hypo on his second week. He is tolerating it very well, all spots are gone. He eats like a horse, everything from Frozen Plankton and Mysis, Rods Food, Formula Two pellets and Sea Veggies, but he looks skinnier to me. So my question is does hypo affect a fish's ability to digest and absorb food, or in any way prevent them from gaining weight. He was always a good eater and very fat.