I use round cages of the same approx. size, and while I've had 4-500 3" HBG in them at one time, I agree with Bill's statement advising starting with a lower headcount. I find I have fewer problems if I don't over crowd the fish. I would probably start with around 150 BG, and see how it goes. 2" is smaller than what I start with, (3-4"), but I do think that starting with smaller fish might yield benefits by way of allowing you to capitalize on that early growth period, and hopefully that would translate into greater ultimate growth potential.

If you do go with the 2" stockers, I would probably prefer a cage with 1/2" mesh, just be aware that the smaller the mesh, the quicker the algae will grow over the openings. You will probably need to clean it fairly regularly. 3" bluegills should be able to take AQ500 pretty well, but the 2" fish might have to peck at it for a bit. I would begin with hydrated feed initially, which might help them take to it a little quicker.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.