(133PO) Saltwater SyStem eNGlISH 7.5” X 10.3” PaNtONe 295U 07/17/2020
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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 - Eye & skin irritation, difficulty balancing water and
poor chlorine efficiency. 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 1.0 - 3.0 ppm 5.0 ppm
Combined Chlorine
0 0 ppm 0.2 ppm
ph
7.2 7.4 - 7.6 7.8
total Alkalinity
40 ppm 80 ppm 120 ppm
Calcium hardness
50 ppm 100 - 250 ppm 350 ppm
Stabilizer (Cyanuric Acid)
10 ppm 10 - 30 ppm 30 ppm