You probably need about a 1-2 tons, but you can't really put in too much. Ph with lime with cap at 8.5. When I have them do it again, I am going to have them put 2-3 tons along a shallow shelf that I have, the rest I will have them drive around the pond. Only about 1/3 of that goes in the pond. Then put what is left in the watershed.
GIve it 1-2 months, and see what happens. If it stays muddy after lime, then decide alum or gypsum.
