Determine the current salt level of your pool. A newly filled pool will usually have a salt level of zero, but testing the water with salt test strips can verify this. A safe, chlorinated pool requires a salt level ranging from 2,500 to 4,000 parts per million. At this level, a human cannot taste the salt, and the salt will not corrode any metal equipment contained in the pool. If the pool's water has a salt content of zero, then adding salt at the ratio of 50 pounds of salt for every 2,000 gallons of water will bring the salinity level to the ideal point of 4,000 parts per million.
Purchase appropriate salt for use in the pool. The salt should not contain any impurities or iodine. Regular table salt, water softener pellets and water conditioner salt will all work.
Turn on the pool pump and open the bottom pool drain.
Add the appropriate amount of salt right over the bottom drain and leave the pump on for the next 24 hours to help dissolve the salt.
Brush any remaining salt from the bottom of the pool toward the pool drain, using a large brush or a pool net.
Add salt periodically only when needed to maintain the level of 4,000 parts per million.