I stocked 17 grass carp last spring (May 05) for a 1.5 acre pond. It is an old pond and not very deep (9 feet tops). I saw a couple of them this year and they were a good 24 to 28" long. I stocked some garss carp two years prior to that (10), but there was every reason that they didn't make it for some reason. Never saw them in '04. I just don't want to use chemicals anymore because of the cost and the hassle. I'm gald your carp did a number on the pondweed. It really spreads.