My pond is 1.75 ac and is 3 years old. 3 years ago, I put 200 Fla bass and 2000 coppernose bluegill. I manually feed the fish nearly every day in the spring/summer but even after 3 years the fish eat no more than a double handfull of feed in 10 minutes or so and then quit eating altogether. After 3 years, bass have grown okay but most bluegill are only 3-5" long. A 50# sack of feed lasts me all summer. Is this acceptable?