As the water seeps through the ground, it collects dissolved salts and minerals such as calcium and magnesium. The dissolved salts react with soaps and detergents, preventing lathering and interfere with the cleaning process. Calcium and magnesium deposits can build up in pipes, reducing flow to taps and appliances.Aries Inline Softening filters use ResinTech® CGS, a cation exchange softening grade resin for residential applications. Softening cartridges remove these "hard" minerals leaving the water soft and more satisfactory for household and commercial use. Available with Quick Connect connectors in 6" and 12" lengths. Aries Inline filters cartridges are designed for low-flow, point-of-use filtration.