Can saltwater pools corrode metal fixtures?

Yes, they can. Saltwater pools use low-salt water (around 3,000 ppm) that’s conductive, and the electrolysis process creates chlorine that eats away at cheap stainless steel, brass, aluminum, and zinc. The fix is to use the right materials like titanium heat exchangers, high-grade stainless (316L), or plastic parts. Don’t blame the saltwater if you used the same fixtures as a traditional chlorine pool.