Bought this 2 months ago and had it installed by a  plumber due to piping issues.
Confirmed the hardness setting with my village water department. It now recharges every 4 days and uses very little salt. Still using the first bag from 60 days ago. Water is consistently soft. Discharge flush water contains  very fine tan granules which I assume are rust since our well water has high iron content. Cannot find an explanation anywhere so assume this is normal. Miss the 'Recharge Tonight' setting from my old softner.