Delzone Trio Pure 25 salt chlorine and CD Ozone Up To 25K is the blend of ozone with electrolysis makes AOP During AOP, Super Oxide compounds, even more potent oxidizers than ozone or chlorine, are constantly being constructed Super Oxides, in combination with free Ozone and free Chlorine, deliver the strongest and safest pool water sanitation. In order to understand the importance of ozonators you must first understand what it is they do.What we call "Ozone" gas is created when oxygen is exposed to ultraviolet light. You may know it as the same gas that makes up the protective layer outside the planet's atmosphere. When this "ozone gas" is distributed throughout your pool or spa water it simulates a strong sanitizer that eradicates almost all of the bacteria found in the water. Water that has been ozonated stays clearer and fresher for a greater amount of time than water that is only cleaned by chlorine or bromine. Browse our catalog and you'll be sure to find exactly what you need!!