For Pools - EPA Registered Frog Minerals Reduce Chlorine Use Up to 50% 

With minerals in the pool destroying bacteria, the chlorine level is reduced to 0.5 ppm. Without minerals, pools run their chlorine between 1 ppm and 3 ppm, which results in a lot more chlorine use. Using example below, when you purchase Mineral Reservoir, they can save up to 97 pounds of chlorine from entering their pool (difference between 117 lbs. at 3 ppm and 20 pounds at 0.5 ppm)

Using example below, when you purchase Above Ground Mineral Reservoir, you can save up to 73 lbs. of chlorine from entering your pool (difference between 87 lbs. at 3 ppm and 14 pounds at 0.5 ppm).