My light rings are fine after 6 years of salt pool. So I wonder if it needs air for the rust to form. Salt is really bad on my natural stone. Flagstone coping needs to be sealed. I have moss rock waterfall/grotto and the salt is doing major damage to some of the softer boulders. Some don't show any wear, and others are really bad. I'm trying to seal them with impregnable sealer to see if I can slow it down.

That said, I really love the salt water feel and low maintenance. My son has skin that gets dry and irritated from normal chlorine pools, but he has no dryness with our pool.

If I had to do it again, I would try to find a harder rock for any water feature and coping, and maybe a concrete coping. I really don't see any damage to my concrete deck due to salt.

I'm in Houston.

Robert