Leave the powder if it is still floating. A commercial breeder who spoke to us at the ALA convention talked about using floating type pellets as fish food and just letting the fry nibble on it constantly. That way they could snack constantly. You would not believe how nice the mollies are that I brought home from his breedings. The sailfin male is over 3 inches long plus the tail and has a sail fin that stands up along his full length and is about 3/4 inch tall. I am going to try that approach and see how far I can get.