Hi have some questions as to pond care. Our pond has been taken over by phragmites. We have tried cutting them down then our pond guy comes out and treats and that made no difference. We dug them all out with loader and that seemed to make it worse. Alot of people around here have been telling us to use the Karmex but ive been reading a lot of bad things about that. We are not so much worried about the algae which there seems to be alot of as well but the phragmites have made it to wherrr we can swin or fish in it. Yesterday and the day before we cut them all down and burned all the way around the 300x400 pound and really need so ideas before it all starts growing back in. Thank you. Any help would be greatly appreciated.