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The generator in your saltwater pool conversion kit transforms sodium chloride—the same salt as table salt—into chlorine. A process called electrolysis sends electricity through the water to interact with the chlorine ion. This ultimately creates the chlorine that keeps your pool safe and clean. The cell in your saltwater chlorine generator is the part that converts the salt into chlorine.

A good rule of thumb is to add one or two 40-pound bags of salt for every inch of rain, but you’ll want to test your salt levels first to ensure you’re adding the right amount. Rainwater can dilute the salt levels in your pool, so after significant rainfall, test the levels and add the appropriate amount of salt to bring it back to the ideal level.

Your indoor pool can be heated or unheated, but the decision depends on your local climate. In regions with freezing temperatures, heating your pool will keep it warm during the winter, especially if it’s only covered with a greenhouse enclosure. 

If you keep your swimming water warm and toasty, budget between $300 and $5,700 for the cost of installing a pool heater.

Avoid the dreaded pool pop by only draining your pool during dry, temperate times of the year. If there is too much moisture or the threat of ice in the ground surrounding your pool, the pressure could disrupt the stability of your pool's floors and walls. Additionally, always open the hydrostatic drains in an inground pool toward the end of the design process.