Bob, interesting post! We have a test area (shallow end) of a 1 acre pond under aeration and pelletized "muck degrading" microbial blend product. Our clients problem was that the area had lost most of its depth due to organic sediments and started growing many weeds. We wanted to dredge it out, but couldn't get our equipment anywhere near the area. We have passed up many jobs like this in the past. So I started contacting any company that stated they could degrade organic material. We finally chose one that actually sent us some case studies. (no, we won't be sharing them on the forum) We started the "experiment" last month with 38" of muck in the small cove. We have a 2 head shallow water aerator with about 200' of hose running to the bottom diffusers. We are adding 10# of the product to the area effected by the sediments, not to the aeration column like you chose. Let's hope we both have success! This could mean a less expensive fix to a wide spread problem! I will try to update to this thread as the summer progresses-