Similar problem here-pond water clarity seemed to be about right for first two years following construction, then became more cloudy/ muddy. Placed hay around shoreline the first year which seemd to clear up muddiness a good amount, however, the next year this seemed to have no effect. This year went with alum and had a great result, however was only 3-4 days effective. Clay banks were exposed so I have covered banks with turf and seeded for better plant growth around shoreline. Two days ago I was above the air diffuser in the deepest area of pond and was obvious that air diffuser was stirring up substantial clay. Have done the jar test overnight and water clears some but not entirely. I am wondering if elevating air diffuser off of bottom a couple of feet would make a difference. Any suggestions would be greatly appreciated-you guys are a plethora of great info.
