Ok guys, I need some help. My pond is about 2.5 acres and has about 2/3 covered in Chara. I have sprayed 25 pounds of copper sulfate over 1/3 of the pond at a time. Plus I tried a product from the Farmers Co-op that is like round up. It has killed the Cattails & pond weed, but very little of the Chara. I am thinking of dying the pond, but with the Chara coming to the top( water level has dropped about 11 inches due to heat), would that help? It is really a problem this year only of the 3 years since it was built.

Last edited by buzbait; 07/29/10 04:39 PM.