[New Englander]

Originally Posted by jimbo2012

Same amount of time/gallons as salt, some softeners (not ours) may require a programming change, the frequency to add depends on water use and the size of the resin bed.

Using potassium chloride may be appropriate if health or environmental reasons necessitate restricting sodium.

Potassium is an essential mineral for plants; whereas, sodium can damage plant tissues.
When the softener re-generates it creates waste water,
this diluted wastewater is beneficial to a shrubs, plants & grass covered drain field.

http://www.novafiltration.com/nova-water-softener/

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How long would a bag of Potassium last? A week, month, six months?