Mr Hello:
Is this the same .25 acre pond you were asking about yesterday?

According to the link you provided, that particular feeder will dispense .8lbs in 4 sec.... X 4 times per day, is over 3lbs of food. Seems like an awful lot for a pond that small.

If it were me, I would watch and see how much of that food is being consumed by the fish, vs. how much sinks to the bottom.

Just feed what they will consume in 10 minutes or so, each time.

"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.