Well it's been a while since my last post. I'm going to try the pump and pipe. My pond is 46 years old with about 5 feet of muck we then had a fire that destroyed all the vegetation for miles around after that I got about 3 feet of sediment at one end of the pond. My hope is that by pumping water down into the muck it will soften the lower part of the muck. I have been sucking the muck out of the pond with a trash pump and sending it to an above ground pool let it settle and drain the water to my bait fish pond and then drain the muck to a pit to make garden soil. I have aeration so I hope that it will bring up some muck to be consumed in the water column.