Ron,

This won't help you but when I lived near the coast I was able to get small "grass shrimp" at the LFS. When I was going to be gone for a week during X-mas I would put about 100 of them in my tanks and just let my fish graze while I was gone. I think the grass shrimp are just juvenile table shrimp, at least that's what they looked like. Actually I think it was good for my fish to actually have to do some hunting.

Gary