Weekly Sustain Maintenance
Sustain 3” Blue Chlorinating Tablets
Provide the general sanitizing component of the 3-part system. They are designed to deliver chlorine consistently when used with their skimmer dispenser cup. Each tablet contains an erosion modifier that controls erosion across the top (exposed surface) of the tablet. Fill the skimmer dispenser cup with 3-Inch Sustain® blue Chlorinating Tablets each week.
Adjust the lid opening to increase or decrease chlorine delivery to maintain 1-3 ppm FAC. For in-ground pools, start with the lid off, and use it later, if necessary. For above-ground pools, start with the lid fully open and adjust as needed. Remember that chlorine demand increases with more direct sunlight, heat and greater pool use.
Sustain ¾” Blue Shield Energizer Tablets
Should be used once a week to act as both a shock treatment and means for keeping Sustain® Summer Shield Chlorine Extender charged with added chlorine protection. Unlike the 3-Inch tablets, Energizer blue tablets do not contain an erosion modifier. The tablets are designed to dissolve quickly (usually within two hours).
Add Shield Energizer Tablets each week. Remember to adjust pH to 7.2 (especially if it is 7.5 or higher) before adding Energizer Tablets. Add one cup per 5,000 gallons of water to the skimmer basket. After adding the Energizer Tablets, circulate continuously for at least 5 hours.
Your weekly Energizer treatment will be much more effective if your water has a pH reading of 7.2 before adding the Sustain® Shield Energizer Tablets. (It will also contribute to swimmer comfort.) For best results, test your water each week and make the necessary pH adjustments.
Professional Water Analysis
Take a sample of your water to your Authorized Sustain System Dealer at least once every six weeks for a professional water analysis, and to keep your Algae-Free Limited Warranty in effect.
IMPORTANT: Do NOT use OTO Test kits for testing Free Available Chlorine. OTO tests for Total Available Chlorine, not just Free Available Chlorine, which is the active chlorine killing off bacteria and algae. OTO turns yellow in the presence of all chlorine, whether “free” or “total”, so it may appear that you have more chlorine working in your pool than you actually do.