Just got one if the BRS 7 stage systems they had on sale during their black friday sale...tried it out (only the sediment,carbon and RO portion) using the garden hose and got 6tds out of product line...before it enters the DI stages. Is that good, or should it be lower? I do not have a water softener yet, do I need one? How quickly will the DI resin deplete?
TIA
TIA