Ron - If the "bluegill" are true bluegill and not green sunfish. Try to get them on a good quality fish food to get rapid growth. You should be able to get bgills from 3-5" to 6-8" easily in one summer.
Crappie are a basic predator. Bob Lusk considers them a ravenous predator. Bob says "they can out compete bass for forage" (PBoss Vol.1 No2). Even with black crappie, if they spawn in a small pond history says you are in big trouble! You will have thousands and their growth will basically stop at 4-6". It will take a tremendous amount of forage to keep them growing.
They don't accept pellets very well; very hard to feed train, but it can be done occasionally with skill.
