Salt sanitation regimens for pools & spas have been around for quite a long time. The “Salt” is either sodium chloride (basically table salt) or sodium bromide. A process called electrolysis, using a very low voltage and low amperage DC current, produces either chlorine or bromine in the spa water.
Because the chlorine or bromine is exactly the same as when using other chlorine or bromine regimens, the advantages & disadvantages of chlorine or bromine with salt systems are the same as with other sanitation regimens.
However, salt systems do have some unique advantages. They will make both the water feel softer and your skin feel softer when you dry off. No other chemicals are involved and because you do not continuously add chemicals you can typically drain and refill your spa annually, rather than 3 – 4 times a year as with other sanitation systems.
