Yes, you can fool the control by putting in a higher hardness number. It is monitoring based on the gallons of throughput and the hardness setting. If you can adjust the salt dose to 5.2 then the control will recognize a 22,000 grain capacity. If you set the hardness at 16 it will then regenerate every 1,375 gallons (22,000 divided by 16). If you set the hardness at 30 it will then regenerate every 733 gallons (22,000 divided by 30).