Fly,
You should be able to get any of those feeds that EWEST mentioned from any farm store or feed store that sells Purina products. They may have to order it for you.

We do similar to Catmandoo but use an old blender to grind up the AM500 into "near" powder. I don't think you could use a standard feeder but we hand-feed it when at the pond site.


1 ac pond LMB, BG, RES, CC