The ClearBlue Ionizer for 40,000 gallon/150,000 liter pools is the simplest and most effective way to lower you chlorine or bromine requirements and reduce your maintenance so you can spend more time enjoying your pool. The system releases natural minerals such as zinc, copper and silver that are positively charged making them highly attracted to negatively charged bacteria in the water. These charged ions neutralize the bacteria, taking some of the load off your chlorine or bromine allowing you to use less than you would have to otherwise. Algae will not be invited to this party as the minerals from a ClearBlue Ionizer will inhibit algae growth so you may never see a green pool again. The end result is a pool that simply needs less attention and has better looking water with minimal effort. Replace the electrode after 2-4 years or when the 2 bars have worn down. Replacing the electrode is so easy, you can do it yourself without a service tech or even any tools. This kit comes with everything you need and is a much simpler installation than a salt system. Includes an industry-leading 5 year warranty.