Salt or brine tank: It merchants salt or brine Alternative (of sodium or potassium chloride), which is beneficial over the regeneration cycles for restoring the flexibility of resins to Trade ions. It mostly will come out in the faucet clear but turns reddish or brown when it reacts with air. https://allyourbookmarks.com/story19215218/5-simple-statements-about-water-softener-system-explained