My lake was overgrown with coontail and Eurasian milfoil. No matter how many grass carp I introduced I could not make inroads into the vegetation. I killed it off with herbicide 2 years ago and have not had any regrowth. I am pretty sure this is due to the grass carp. I have maintained an almost perfect turbidity since killing the weeds (before, the water was very clear) no doubt courtesy of the released nutrients from the dead vegetation. Pond of 3.5 ac, added up to 60 grass carp in frustration.
