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Hayward HCC 2000 W3HCC2000CP Controller Package with Pre-mounted Chemical Pumps. Perfect for swimming pools, spas and water features, the HCC 2000 is a powerful yet affordable microprocessor-based pH/ORP water chemistry controller. The controller features proportional feed to ensure precise water chemistry maintenance. It operates using the Oxidation-Reduction Potential (ORP) method of water analysis to ensure rapid deactivation of waterborne pathogens such as E. coli.