I know I've read it...

Sure. You do it every time you add liquid chlorine. But you can also add 1500 ppm or so of salt. Will not hurt anything.

Use water softener salt from Walmart, Home Depot, etc. Make sure it is pure salt, no additives.

Take care.
 
From here, Pool School - Definitions and Abbreviations is this:

Salt
Sodium Chloride
All swimming pools contain some salt, since there is some salt in most of the chemicals used swimming pools. Salt, at levels around 2000 ppm, can be used to improve the subjective feel of the water. Most SWGs require salt levels around 3000 ppm, though some require higher levels. Salt can contribute to accelerated corrosion of some materials, especially some of the softer kinds of natural stone and inferior grades of stainless steel. Ocean water typically has salt levels around 35,000 ppm, more than ten times the levels commonly used with a SWG.
 
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