Zodiac is a premier name in pool mineral sanitation. Their popular Nature 2 line combines the benefits of Natural Mineral sanitizers with other beneficial systems or offers mineral sanitation as a stand-alone sanitation solution. The Fusion line combines Mineral Sanitation with Salt Chlorination. They also offer the Professional G for installation on new or existing swimming pools. The express system is perfect for existing pools requiring sanitation and the Nature 2 CF cartridges require no installation at all! Mineral sanitation greatly improves pool water quality - leaving you pool soft, smooth and sparkling to swim in. It is also healthy for the environment as it reduces the need for expensive and harmful chemicals such as chlorine!