I'm researching this Phoslock product as it sounds interesting. I'll let you know if i go with it. I'm wondering how affordable it is? I may just go the chemical route since it's so bad and try to keep it in check and hit it with an attack plan early next season. Raking it out at this point is out of the question unless I had a crew of 20 men armed with rakes and spent 10 hours or more. The pond is almost completely covered at this point and it's pretty thick. Thanks for all your help.
I think I might try the Phoslock (thank you green head for posting about this). I have a newly re-dug, 1/4 surface acre pond (3:1 slope, 13' deep) that had quite a bit of FA upon filling. All is good now since I've started my bottom aerator so I probably won't use it this year but I think it's a great (safe) way to reduce nutrients in a pond.
Here is some info on Phoslock:
http://www.phoslock.com.au/faqs-usa.php#2It's available here:
https://www.lakelawnandpond.com/MiscContactUs.aspx I was told my pond would need one pail, 40 lbs ($175, free shipping). You have to remove or kill your algae first. I agree with Bill about increasing the depth and controlling watershed though or you may end up battling this problem often.