How to Calculate the Salt Required for a Commercial Salt Pool

Salt pools are an alternative to managing chemicals associated with chlorinated pools and use a generator to convert salt into chlorine. They have less salt than the ocean, making the taste of salt unnoticeable. Salt pool systems eliminate the need for shock chemicals and algaecides. Also, they do not irritate your eyes or turn hair green. Salt pools use either solar, water softener or food grade salt. The pool must have a certain level of salinity, which is the number of grams of salt per 1,000 grams of seawater – though the testing meters usually measure the salt in ppm. The ideal level is between 2,750 and 3,200 parts per million (ppm).

Instructions

- 1
  Use a salt detector to keep track of the salt concentration in the pool. When the salt falls below the recommended level, add more salt. However, the display on the salt detector has a delay when reading salt concentrations. If the salt concentration is still too low, wait one to two days before adding more salt.
- 2
  Obtain a calculator that tests pool water salinity. Enter the volume of pool water in gallons.
- 3
  Determine the volume of the pool by multiplying the length, width, average depth and multiplier. The multiplier considers the shape of the swimming pool and is “7.5” for rectangle, square and free-form pools. It is “5.9” for round or oval pools.
- 4
  Determine the current pool salinity, with fresh water pools having no salinity. The calculator will provide the values needed to determine how much salt to add.

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