we have a 3/4 acre pond and we threw about 20 adult crappie we caught in there and we still have large bass and huge bluegille and my dads friend has a 1 1/4 acre pond with crappie catfish bass and bluegill there are huge bass (caught a 10lb last year) and the catfish are good too only the bluegill are small. So why is it that you guys always say that they will over populate when they arent here are we just lucky? also we are trying to thin some of the gills and small bass because they are overpopulating i was thinking northerns (i love cathching and eating them)the pond is spring fed and durring normal water levels it is approx 12 ft. deep.