Crush the flakes till it's powder.
I made a homemade fry container so I could keep better track of my Molly babies. I used a sherbet container, cut big holes in the sides, and stuck it down inside a knee high pantyhose. Then I hotglued two suction cups on it and stuck it in my tank up high. That way they can share the tank water. I left them in there a month. They're easier to feed that way too! Good luck!