Ok, I am just about to make the phone call to get my permit to stock grass carp and wanted to get any feedback on this endeavor. My pond is about .19 acre and is getting taken over by duckweed. I have been doing a lot of reading about mechanical and chemical removal but like the idea of letting fish take care of it. I discussed the tilapia issue but the legality and the short life span of those due to winter kill is the issue.

The reading I have been doing suggest anywhere from 3-5 grass carp for my pond size. The guy that is selling me the fish says 20 which I feel is overkill. I am thinking more in line with 5-7 total knowing that duckweed isn't a favorite food for grass carp.

Any input from the group is appreciated. The only negative to these fish(from what I see) is the thorough job they may do to the plant life in the pond.

Thanks