esshup: Thank you very much for responding. It has been a few years since I bought the aeration equipment and I don't remember what the make or the size of it was. I honestly don't think it was powerful enough to aerate the whole pond. At the time my intention was to put the diffuser in the 30 foot depth side of the island out from the waterfalls. The stretches of pondweed are in the deep side of the pond. 'If' I treat that with copper sulfate should I use liquid or granular? To keep the cattails contained in designated areas without spreading too much, I spot spray them a few at a time with 2-4-D. We have a good bluegill population. There are bass but not as many as the bluegill. Last year our one son-in-law caught and released a 25 1/2 " bass. No one has caught a walleye since my wife caught a 22" one in 2020 or 2021. I have read they usually don't reproduce in ponds unless there is moving water. I thought with the limestone rip-rap, water moving from the waterfalls, and 30 foot depth, they might. Guess not. For two years I have been purchasing 40 lb. bags of floating fish food pellets from Optima Fish Food. My wife has the fish trained to come to her every time they hear/feel the John Deere gator come to the side of the pond. It is remarkable to see the V shape wave action on the surface as they race towards her to feed. I'm not sure how many if any perch are still in the pond. A son-in-law caught a nice one last year. What is a proper way to kill coontail with cutrine plus and diquat? I believe I have a jug of Cutrine plus and also one of Weedtrine. I thought I had read that Diquat was banned from purchasing. Should some be left or try to remove all? Just do small areas at a time? Grovertown .... not too far away. We are on the Michigan line on east side of Clear Lake.Thank you.