UV Pool System vs Salt
When deciding on the type of sanitation, many pool and spa owners look to determine the differences between salt and UV; and the differences are significant. First, a salt itself does not perform any sanitation function. It must first be converted to chlorine by salt generator (salt cell) using electrolysis.
A UV system adds nothing to the pool water. As the water passes by the UV-C lamp, the UV rays (254 nm) kill or inactivate microorganisms, leaving clean, clear, and safe pool/spa water. Unlike a salt system, there are no corrosive elements remaining in the pool, harming pool equipment.