I'm still digging through all the threads here, but wanted to get this out while I continue my search. I recently called a local pond supply shop to ask about their aeration systems and they advised against installing one. I'm on an 8 acre pond built in the 70's. I'm after a healthier pond overall, which has a lot of weed growth and algae. The warning was about kicking up cyanobacteria on the bottom and causing a bigger issue. The recommendation was spot treating, that's it. I know there's got to be discussion in here already about aerating an old pond and this specific concern, but I haven't found it yet. Anyone have this problem? Is it a worse before it gets better type of deal? Thanks!