This kansas farm pond is 43 years old. It used to be 25 feet deep. When the original owner stocked it, he put in bluegill, channel catfish, and largemouth bass. The channel cat used to get to 25 pounds. It is fed by a natural spring. Over the years the pond has silted in and is now only 10 feet maximum. We dont catch channel catfish. The bass are under a pound. There are two many unwanted fish. My goal is to restore big channel catfish, big large mouth bass, and get rid of the unwanted fish. I also want the channel cat to reproduce in the pond. So, It would be very nice if someone could tell me what I need to do. Money is no object.