We also have Wigdeom grass in our pond 900 ft. x 100 ft. pond. I'm also interested in grass carp - didn't Pond Boss have an article on them a few months back? We're also in Michigan and will look forward to the answers about where to get some de-sexed grass carp. How many for a pond our size? We have a lot of fish and wildlife and want SOME weeds - just not so many!
Thanks!