The first two photos were not Potamogeton due to the growth habit (big ball like clumps) and short needle like "leaves". Later blurry picture does look like a Potamogeton. Until we get better pictures and more info all guesses are correct.

Last edited by Bill Cody; 04/24/13 11:15 AM.
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management