The Aqua-Series is a leader in the marketplace. The Aqua-6 Ozone Generator, having been A2Z Ozone's best-seller since 2004, is now in second place to the Aqua-8 Ozone Generator. These ozonators are two of the best choices for introducing ozone into your routine on the market. The main difference between the Aqua-6 Ozone Generator and the Aqua-8 Ozone Generator is that the Aqua-8 has the ability to be used with an oxygen generator or tank. You can also use the Aqua-8 without oxygen. The application of oxygen produces a more pure form of ozone. Click on the links below to learn more.