Hey CIMDMA like Bobad said it's good to see another Louisianan on the forum. We're neighbors, I live in Pearl River. I've had the same problem with my pond for the longest. It took about a year for it to start to clear up. It's about 1-1/2 years old now, and it still isn't the way I would like it, but it is better. I found since I installed the aeration system it really helped. Like you, I haven't found a local source for Gypsum or anything else that might help the situation. Also, I agree with Bobad, it's hard to fight the amount of rainfall we deal with here in La. Do you have grass established around the pond? That was another big difference with my pond. Once I got grass growing it really helped filter the clay that was being washed into the pond. I wanted to put Gypsum in but couldn't find a supplier.