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2221 Standard Ave.
Santa Ana, CA 92707
Toll free: 800-676-SWIM
Office: 714-754-4044
Fax: 714-754-1405
1-800-676-SWIM
info@knorrsystems.com
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Helpful Hints - Troubleshooting
Ideal Water Chemistry
Free Chlorine Range
Ideal Range = 3 ppm - 5 ppm
To increase: Add chlorine.
To decrease: Add sodium thiosulfate
pH
Ideal Range = 7.2 - 7.8
To increase: Add soda ash
To decrease: Add muriatic acid, sodium bisulfate or CO2
Alkalinity
Range = 60 ppm - 150 ppm
Ideal Range = 80 - 120 ppm (cal. hypo or sodium hypo ideal is 80 ppm - 100 ppm)
To increase: Add sodium bicarbonate
To decrease: Column muriatic acid or add sodium bisulfate
Calcium Hardness
Range = 150 ppm - 1000 ppm
Ideal Range = 500 - 800 ppm
To increase: Add calcium chloride.
To decrease: Dilute, dilute, dilute...
Cyanuric Acid/Chlorine Stabilizer
Range: 10 - 30 ppm
Ideal: 20 ppm
To Increase: Add granular cyanuric acid
To Decrease: Dilute, dilute, dilute...
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