I have seen Chara become a big problem. I treat with granular Cutrine at the reommend rate, and have good control. Grass carp have a low prefernce for it. Years ago we stocked Bruce Sutters pond with grass carp about three times at a rate of 10/ac and still could not get them to control Chara. I feel even after loss there were at least 15/ac in the pond. Good luck!


Greg Grimes
www.lakework.com