Water softeners are available with different pellet or ingredient for cleaning or deterging the hard water elements. Water softening systems are accompanied with softening pellets like salt and potassium chloride. Both of these pellets are known as softening pellets for purifying the water. Salt is used in bulks of pounds to soften the hard elements of the water by reducing amount of calcium, magnesium and iron. Potassium chloride water softening pellet also uses the same principle to soften the water content.