I have tried the jar test and it never settles down, the pond is right under an acre and the average depth is around 4 feet, the deepest part is a 12 foot hole. I have tried the gypsum and like i said it worked for awhile, is there any corrective stocking I can do to get rid of the CC. or do I need to just invite everybody i know over for a fish fry, they arent to easy to catch. We have two horses that have access to the pond but dont seem to cause much of a problem.

thanks for the help guys