i would go with PFF's advice. give it time. my acre pond was real clear in spring , good 2'. buy early summer it was less than a foot. (busy fish) i wasn't very happy and the fishing sucked. i bought 2-50lb bags of alum sulfate(it was like the size of a BB) might use liquid next time. 50lbs of hydrated lime. i checked the PH level it was 6.8 on the test strip. i mixed 2 parts alum to 1 part hydraded lime. mixed 2 5 gal buckets at a time. the alum never really mixed like i wanted it to. put the buckets in boat and poured it slowly into the trolling motor to help spread it around some. also turned on the diffusers and poured some there. left them on all day and night. when we were doing this i keep checking the PH , it never changed. 2 days later the water was back to 2', sweet. the PH was 7.8 , also killed all the algea as a bouns. now i notice when the kids go swimming or a hard rain , she gets dirty again. next day she clears right up. i think it's because the alum never really dissovled that much when we mixed it. it's on the bottom and when the water get disturbed it attacks the supended clay. when the fish disturb the water same applies, ponds been nice and clear since i did it. so maybe the alum in BB size wasn't such a bad mistake. all i know is i'm happy , didn't loose one fish and the fishing is great.

i only wanted to have some fun