I have 70 CC in my 1/4 acre pond and that is too many. I wish I had stopped at 45 or 50. I fed about 250 pounds of food from Oct 2015 to Oct 2016 and got them from 6 inches to 2-1/4 to 4 pounds. It varies a lot depending on the individual CC. I think you would do better to limit the CC number to 180 to 200 per acre, but this is only my opinion.