You can read how Odyssey Manufacturing goes to great pains to remove even trace metals from the water because it can cause the chlorine to degrade too quickly and to produce too much oxygen. For every 10 ppm Free Chlorine (FC) from sodium hypochlorite (or lithium hypochlorite), it results in 17 ppm sodium chloride salt. Half of this is from the salt in the initial product and the other half is from the chlorine when it gets used/consumed as it becomes chloride. ANY chlorine product will produce 8 ppm salt from 10 ppm FC. However, Trichlor and Dichlor will also add 6 ppm and 9 ppm Cyanuric Acid (CYA), respectively, while Cal-Hypo will add at least 7 ppm Calcium Hardness (CH) in addition to salt from the usage/consumption of chlorine.