For every 10 ppm Free Chlorine (FC) added by ANY source of chlorine, the chlorine when consumed/used will result in 8 ppm salt. For bleach or chlorinating liquid, they add an additional 8 ppm salt upon addition. With 2 ppm FC per day chlorine usage, this means that bleach or chlorinating liquid will add around 100 ppm salt per month if there were no water dilution, so not very much given that salt water chlorine generator pools are 3000 ppm.