We take care of several swimming ponds of which one is our own of 1 acre in size. I also feed AquaMax grower 500 (5D05) to forage in many of those ponds without an additional nutrient load that causes excess algae or plant growth compared to non fed ponds. These ponds are clear and support some chara and plant growth in allowed areas. The one thing that I think that has worked in these ponds is lifting at least twice per day and they are all on a bacteria program. Even though this feed has 1.15% actual P we are able to keep Ortho P levels below <0.01mg/l These fish all seem to be doing well but Im sure not as well as a pond where the goal was primarily growth .We have fed this way in our personal swimming pond for the last 7 years and a few of those years fed trout from October to May.I think you can have a good fishery and swimm'n hole at the same time but there are some additional expense that can go with it.