Sounds to me like an alum treatment is in order to tie up the nutrients in the bottom of the pond, or as TJ said a drain and dip.
I looked into Alum in March when I had the issues with the suspended sediment. Fear of a fish kill and inability to find Alum led me to use Gypsum back then. How long would it take for the Aerators and some bnefial bacteria to remove the sludge, do the bacteria actually work or is this some gimmick? Are Tilipia a viable option, if so any ideas where I can get them in my area.
