Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Fighting Chara

Greenhead, I have also had good luck with white amur (grass carp) eating Chara. Younger fish (2-5 yr olds) seem to do a better job of eating Chara than old timers. I have gotten pretty good Chara control by using 7 to 9 amur per acre. Cecil will need to stock more per acre because he has colder water and amur feed best in warmer water (>70F). Degree of infestation of Chara also is a factor for stocking density. AS Bob mentioned earlier, complete elimination of Chara may not be your best option.

Note that some southern ponders on this forum have stated that they did not get very good control of Chara by amur. I am convinced that amur as individuals in the group posess some variability in their taste for various plants. I think all amur are not created the same.