My best guess. Here is the problem you may be facing. Housing in rural and many suburban area's mostly have septic systems plus farm fertilized field that eventually run into streams and rivers causing high nitrates in the water. Slowing this water into a quiet area with summer heat would allow algae to form with all of that fertilizer in it. It would seem most fixes would be washed right out of the pond.
On the other hand a couple of guy's I know with dammed ponds have flow through streams and they control their FA algae with copper sulfate that is pretty cheap in price. Or growing excessive amounts of aquatic plants would help.
Last edited by John Monroe; 07/04/14 04:01 AM.
