Here in Las Vegas we have had very strong winds blowing dust and Debree - which collets in the pond. I think my pond was too far gone with muck and Debree for this to work. Drained pond today and there was allot of muck which I removed. Will be starting my fishpond with clear water and will try this product again and will be able to accurately evaluate.
Rating: [4 of 5 Stars!]