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WATER CHEMISTRY
CAUTION: The chemicals used to maintain the pH balance of the water
and to sanitize the water can be dangerous. Always follow these basic
guidelines when handling the chemicals:
1. Always read and follow the directions on the label, unless directed
otherwise.
2. Never mix different chemicals.
3. Do not exceed the recommended amounts of chemicals—follow the
directions on the label.
4. Keep all chemicals out of the reach of children and pets.
5. Keep containers closed tightly when not in use.
6. Never add water to the chemicals—always add the chemicals to
the water as directed.
7. Always store chemicals in a cool, dry place.
WATER TREATMENT GLOSSARY
1 - Total Alkalinity: Total Alkalinity measures the water’s ability to re-
sist uctuations in the pH level. It is measured in ppm (parts per million)
ranging from 0 - 400 or up. The optimum range for your spa water is
between 80 and 140. This can easily be measured with 3- or 5-way
test strips. With low alkalinity the pH level will be prone to dramatic
uctuations. With high alkalinity the pH becomes increasingly difcult
to adjust.
2 - pH (potential hydrogen): The pH is used as a measurement of
the active acidity, the concentration of active hydrogen molecules in the
water. pH is measured on a scale from 1 to 14, the lower numbers in-
dicating a greater concentration of active hydrogen. While 7, halfway
between base and acid is neutral, the optimum level of acidity for a spa
is between 7.2 and 7.8.