Just be sure when you are feeding the crushed flakes that you don't overfeed. The smaller size makes it easier for the food to fall between the gravel pieces where it will decay and foul your water. Personally, I just feed the same to the babies as I do to the parents, like lukej said. I have used the First Bites and also the liquid fry food, but never found it necessary with livebearer fry--it is good stuff for egglayer fry, corycats, angels,etc. Another suggestion would be to maybe invest in a larger tank for the babies to grow up in. 10 gal would be good, 20 gal would be great. I have found platies to be slower growers also, but they're good looking and worth the effort. Congratulations and good luck!