APR stands for artificial Plankton and Rotifer This was originally designed for marine fish but has been adapted for all fish that need this very fine small foods. IT works great for Rainbowfish, Killies, Anabantoids...... many types of fish. Like the Good man Mike Jacobs says... it can be a messy food . If you over feed APR it can foul the water....... the directions tell you to use just a small tiny pinch..... this stuff goes a LONG WAYS..... I use it to raise my Betta and Gourami fry..... Personally if you have fry this small that needs APR powder, use green water, it works better and doesnt foul my fry tanks as bad. Buy the smallest can you can...... learn to use it and see how far it goes.... I think JEHMCO carries it.... or they carry a product that is just like it! Hope this helps! John ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com.