try hikari first bites powder food for tropical fry crushing flakes works but its hard to get it as tiny as this plus is last a long long time it's 54% protien, so it should work fine, but just a very tiny amount what ever sticks to your finger when you dip it and just brush it over the top if the water by the filter or where ever they gather at, its slowly sinking so after a bit they start to sink so they can grab it and feed,. i get mine at petsmart.. around $3 or so..much easier..