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.
Thank you! I didn’t know it helped reduce FA. That’s very good news. I’ll add one GC once the pond weed gets all the way around the pond. Thanks again.
9 yr old pond, 1 ac, 15' deep. RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these. I think that's about all I should put in my little pond. Otter attack in 2023
