Read all of the comments above and I would like to make a few comments and ask a few questions.

I have a three acre pond with a lot of big bass in it. I have been trying to clear it for three years with little success. I put gypsum in it last year with no success for about five weeks. Then one day during the hot summer the pond turned over. I guess the gypsum was laying on the bottom because overnight it completely cleared up.

It stayed clear for about five months and during that time I caught a lot of fish. They went crazy.

But then it went murky again and the fish stopped biting.

I also fertilized while the water was clear but did not see any change. The water is so murky that vegitation will not grow.

The pond was built about seven years ago by a bass pond building professional. It has all the underwater ledges, cover and sponing areas for growing big bass but the murky water is a very big problem. The bass are now getting thin with big heads.

The edges of the pond have clay exposed and I was thinking about bringing in some gravel or rock to put around the bank but I don't know if this would help. Anyone have a comment about that?

Anyones thoughts would be appreciated.