Our pond is generally clear with clarities in the 48-120” range year around. Even when there is significant zooplankton activity (as evidenced in water sampling) the clarity remains high. The pond bottom is primarily sand and gravel with about 40% of it covered with various plant species. There are a few large 36 inch Bronze Goldfish (bronzis goldes rooti) that churn up the bottom in the shallows. The material they throw into suspension almost immediately clears as they leave an area.
When FA appears there isn’t much of it and it disappears within a week or two. Since there has been so little of it I haven’t paid much attention. Could it be that the giant natural bio filter (that the pond is) works against its development?
