I am new to the forum so let me know if I misplaced this post or leave any thing out.
We have a dam in South Dakota that has winterkilled the last three winters despite being very deep and keeping the ice relatively clean and clear. We have tried to run some small aerators but have trouble keeping them running properly and keeping snow from blowing in and crusting over the hole I am pretty sure we have a problem with excess nutrients (phos).
I am wondering if it would be possible/feasible/effective to address the source of the problem, excess nutrients, with an aluminum treatment. Rather than using aerators, which seems like a cover up for the larger problem.
Some back ground information: Dam was built in 1999. Currently covers 12 acres. Deepest point it 32 feet. Average depth is probably 16 ft. The water surface is not very protected so there is a lot of wave action when we have wind.
We would greatly appreciate any input from some one who has some experiece with alum, or any other ideas or insights.
