Move the well system about 300 miles south :^). It's hard to retrofit your present installation without doing some serious changes. However I like the new Hydromatic Tank systems because they are better. Your present system has a snifter valve on a check valve near the tank and a bleeder valve in the drop pipe in the well. When the pump builds up pressure and shuts off, The check valve on the pump and the one near the tank closes, then the bleeder valve in the well opens allowing water from the tank check valve to drain back into the well, the snifter valve on the check valve at the tank allows air to enter the system, draining the water from the tank check valve back into the well below the freeze line. Each time the pump started it would pump an amount of air in to the tank. The tank had an Air Volume Control on the tank to release excess air. This worked great in it's day but the air in the tank did cause any iron in the water to oxidize causing additional problems. The proper solution is to keep the new tank and remove the check valve, the schrader valve, remove the drain back valve in the drop pipe in the well and probably bury the pipe from the well to the tank deeper. But that's a lot of work!