Al, I've done both with my caged fish...fed hydrated AQ only when the water was open, and let them fend for themselves all winter, open or not.

No scientific data, but just my eyeballs. I can't tell any difference. I'm not feeding the BG's I have caged this winter.

"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.