Does anyone make a water softener specifically for a pool? A unit that can be placed outside in direct sunlight by the other pool equipment. If I can soften the water supply that feeds my autofill, I can eliminate one headache….CH too high. My municipal water supply is 240 ppm. My pool is in AZ and the water loss due to evaporation is high. It doesn’t take long for the CH to to become too high. It’s been about 6 weeks since a complete drain and refill. In that six weeks, my CH has increased 120 ppm and it’s not even that hot yet.