All three of the PBs we received quotes from said that the salt eventually attacks/degrades the natural stone and/or leaves white deposits where it evaporates. One mentioned corrosion to pool equipment. But it was such an instant negative response when I asked about a salt pool installation...that I felt they weren't being upfront with me....that something else was making them recommend against a salt pool. We now have an IG, 15k gallon freshwater pool with flagstone coping and moss rock waterfall. This is our first pool experience....we were interested in getting a salt pool for all of the positives they offer and none of the negatives of a freshwater pool...but the pool builders convinced us to rethink our options. We also talked with six customer referrals and the verdict was 50-50 on salt pools.