Sparkie, like Dr Luke I have some concern when it comes to aquatic plants. BUT, PB magazine May/June 2017, Aquatic Vegetation and Trophy Fisheries/Dylan Kwak, recommends at least 10% to 15% of the cover in a pond should be vegetation. I have made several attempts to grow some but so far have not been successful. Brian (Highflyer) was kind enough to let me have some of his American Pondweed from his pond and like the other aquatic plants I have attempted to grow , it did not make it either. I do well above the water or at the ponds edge with growing plants but below the surface, Nothing I have planted has taken up roots. I am now building and using brush piles along the shoreline to make up for the lack of plant cover. OH! I already had some nice brush piles in the pond, but they are out in the deeper parts of pond