Salt systems that generate chlorine can cause scaling in pools, which is the buildup of calcium and other minerals on the pool surfaces. This can be unsightly and can also damage the pool equipment. Scaling can be prevented by using a water softener or by adding a scale inhibitor to the pool water.

Corrosion

The chlorine generated by salt systems can also cause corrosion of metal components in the pool, such as the heater, filter, and pump. This can lead to expensive repairs. Corrosion can be prevented by using a corrosion inhibitor or by cathodic protection.

Chloramines

Chlorine generated by salt systems can react with nitrogen compounds in the pool water to form chloramines. Chloramines are not as effective at killing bacteria as chlorine, and they can also cause skin and eye irritation. Chloramines can be removed by using a chemical oxidizer or by ultraviolet (UV) light.

Low pH

Salt systems that generate chlorine can also lower the pH of the pool water. This can make the water corrosive and can also cause skin and eye irritation. Low pH can be corrected by adding a pH increaser to the pool water.