Why do I continually have high chlorine readings? 

First, be sure that you are using the right test kit: 3-Way Test Strips or DPD (pink) and not using OTO (yellow). OTO measures total chlorine, so it will always give too high of a reading when the Sustain System is used properly. Free Available Chlorine (FAC) is the form of chlorine that safeguards the swimmers and both DPD (tablets or drops indicate available chlorine with a pink color) and the 3-Way Test Strips measure FAC. If your FAC readings are consistently high, follow these steps:

1. Adjust the lid on the Skimmer dispenser to a smaller opening so the table erosion decreases.
    
2. If the tablet erosion is one tablet per week or less, and you still have high FAC readings, add one half the normal dose of Energizer Tablets; that is, 1 cup of Energizer Tablets per week for every 5,000 gallons of water.

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