QCA Spas Del Ozone APG-U-01 Ozonator Hot Tub Ozone Generator, 8 by 8-Inch, Cream Sanitizes hot tub water Drastically reduces usage of chlorine and other oxidizers in hot tub water Protects metal equipment from corrosion, extending the life of equipment and saving on costly repairs Easy to install into a hot tub with a dedicated ozone air tube, jet and Balboa control pack (not included)