My pond about 5/8 acre 15ft deep in some spots,some 3ft spots, clear to 4ft about 30% weeds, very little algae.For the past month I find 2 or 3 bg floating every morning all large no small ones. This is really got me stumped. Any one got any ideas what might be going on.Thanks....btw...got one aireator running 24/7 since aug.1 my water is a lot warmer then last year.