Thanks for the help esshup! After dragging the pond I got in and walked barefoot on the pond bottom to feel the difference. I found throughout my walk there were places the plants were removed roots and all. In other areas there was a 1/4 inch soft carpet of remaining submerged weeds that had been mowed. The next step of adding 15-20 GC this fall will hopefully keep submerged weeds in check in future years.
