Copied and pasted from original thread.. I think it needs to be here..

My first thought is I don't really see any beneficial type aquatic vegetation, like bulrush, arrowhead, etc.
The older a pond is the more nutrients there will be-in general-if there is nothing present to "use" the nutrients.
I see some filamentous algae growth-which is locked up excess nutrients, but a vicious cycle. You can kill it, but as it decomposes, nutrients are re-released back into the system and repeat.
Aeration does not inhibit algae or aquatic vegetation, in fact in some cases I believe aeration can keep some sediment in suspension and make agal growth worse-there are ways to lesson that.
We (I or anyone making an educated guess) need to see some samples of plants from the pond on a white-ish background (bottom of a 5gal bucket) to see the type of plants you have and ID them correctly. If you can post a pic or 2 of that, we can determine actual type and go from there.


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