Ace Sanitizing System for Hot Springs Spas. Requires Freshwater Spa Salt. The item “Hot Spring Ace System Complete 76067″ is in sale since Sunday, May 21, 2017. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Spas & Hot Tubs”. The seller is “hottubspasupply” and is located in Yonkers, New York. This item can be shipped to United States.