One grass carp will easily eat 4 to 6 times or more that amount of American pondweed. Age of GC makes a difference as to how much it eats per day or year. When those plants encircle the pond consider adding 1 grass carp to thin it out but not eliminate the pondweed. This is a very good habitat plant for the small fish. The plant growing along the edges also competes with filamentous algae and helps reduce amount of FA along the shoreline.
Last edited by Bill Cody; 05/27/2209:06 PM.
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine - America's Journal of Pond Management
