All pool water needs some form of sanitization. Without it, the pool would be overridden with algae in a matter of days. Sanitization can happen in two ways: By adding expensive, dangerous chemicals or through a natural salt water chlorination device. You can choose to add chemicals such as chlorine or use an automated salt water system that generates its own ultra-pure sanitizer and makes the water more comfortable.
In 2002, only 15% of new pool installations were salt water. Today, an estimated 70% of all new pools are being built with salt system chlorine generators and the nation has more than 1.3 million salt water pools. It was introduced to the swimming pool market in the 1970’s in Australia and has been gaining popularity ever since.
The salinity of the human body is around 6000 ppm. If the body is placed in fresh water, osmosis occurs through our skin and eye membranes which is irritating and a cause of discomfort. The effect of this is much reduced in a salt pool because the osmotic effect through our biological membranes is reduced. The ocean has a salinity level of 35,000 ppm, while a salt water pool is only 3400 ppm. And since the salt level of the pool is about ½ of the human body salinity level, the salt is virtually undetectable (except for the lack of shriveling skin and red eyes!)
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