For additional water purification, less maintenance and the need for less harsh chemicals an Ozone Purification system can be added to your Tuff Spa. The installation is simple and units are very affordable. The UltraPure™ produces the strongest oxidizer available (ozone). The UltraPure™ does the oxidation work normally attempted by Chlorine/Bromine. Obnoxious combined Chlorine/Bromine compounds are eliminated. Chlorine/Bromine then only provides a "free available" residual. All problems and wasted chemicals associated with combined Chlorine/Bromine are eliminated. Chlorine/Bromine is still needed but in much smaller amounts.