I have a 1 acre pond and I originally added 7 grass carp. A couple of them were only 5 inches long they may have gotten ate not sure on that?? I almost had no pondweed this year and I was 60 percent covered. What they didn't seem to even touch was the Chara. I had a ton of it still so I added 3 more that were 11 inches long. So I now have 10 if they all lived. So we will see how things go this next year. I don't mind having some Chara but it was 70 percent all over my pond.

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!