This man should not do or be on your property, we hired him, paid him in advance, and first visit, screwed up. He put four times the limit of calcium in the pool and for the next two weeks said don’t worry, it will disappear. It never did, and messed up sides, pipes, and everything inside. All is destroyed. Then he blamed us, said nothing was wrong, we were wrong, its our fault, then quit and just left us with problem. Yours at your own risk.