Intex Krystal Clear ZS8110 - Pool Water Chemistry Explained; Key Water Parameters and Definitions

(187PO) MODEL ZS8110 OZONE & SALTWATER SYSTEM ENGLISH 7.5” X 10.3” PANTONE 295U 06/28/2013
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POOL MAINTENANCE & CHEMICAL DEFINITIONS
Free Chlorine
-
Is the chlorine residual present in pool water.
Combined Chlorine
-
Is formed by the reaction of free chlorine with ammonia wastes.
Result if too high - Sharp chlorinous odor, eye irritation.
pH
-
A value that indicates how acidic or basic a solution is.
Result if too low - Corroded metals, eye & skin irritation,
destruction of total alkalinity.
Result if too high - Scale formation, cloudy water, shorter
filter runs, eye & skin irritation, poor chlorine
efficiency.
Total Alkalinity
-
Indicates the degree of the water's resistance to change
in pH. It determines the speed and ease of pH change, so always
adjust total alkalinity before adjusting the pH level.
Result if too low - Corroded metals, eye & skin irritation.
Low alkalinity will cause the pH to be unstable.
Any chemical added to the water will have an
affect on pH.
Result if too high - Scale formation, cloudy water, eye & skin irritation,
poor chlorine efficiency.
Calcium Hardness
-
Refers to the amount of calcium and magnesium dissolved in the water.
Result if too high - Scale will form and will cause the water to
become cloudy.
Stabilizer
-
Stabilizers extend the life of chlorine in swimming pools.
(Cyanuric Acid)
• Do not add pool chemicals directly to the skimmer. This may damage the cell.
• Maintaining a salt and sanitizer level above the recommended range can contribute to the
corrosion of the pool equipment.
• Check the expiry date of the test kit as the test results may be inaccurate if the kit is used
after that date.
• If, due to heavy pool usage, it is required to increase the sanitizer level, then use a chemical
based on Trichloro-s-triazinetrione or sodium dichloro-s-triazinetrione dihydrate.
Preferred Water Chemistry Reading
Minimum Ideal Maximum
Free Chlorine 0 0.5 - 3 ppm 5.0 ppm
Combined Chlorine 0 0 ppm 0.2 ppm
pH 7.2 7.4 - 7.6 7.8
Total Alkalinity 100 ppm 100 - 140 ppm 140 ppm
Calcium Hardness 150 ppm 200 - 400 ppm 500 - 1000 ppm
Stabilizer (Cyanuric Acid) 10 ppm 20 - 40 ppm 50 ppm