I too would be interested in products which work but are not necessarily harmful. I guess I want to try to be greener in managing my pond.

Has anyone tried barley straw with any success? I have had several people recommend using that as a preventive measure.

Thanks,

I subscribe!

1/3 Acre pond - Central, OH
Deepest point 11 ft.
Stocked with:
Hybrid Bluegill, Bluegill, Yellow Perch, Largemouth Bass, White Amur.