I recently came home from a vacation during monsoon season to find I had a green "south Phoenix foreclosure style" looking pool... Happened quickly too, but I could not see the bottom. It was Sunday at 1pm. I yelped for help and Ken called in a matter of minutes. Long story short, he had someone there that next morning killing all the green and his service worked through The night on Thursday and through the weekend to empty the pool, scrub it all down, did the tiles and a complete setup. Don't think the pool has ever looked as good as it currently does. I highly recommend them.