Use and Care Manual

pH: The measurement of water acidity.
PPM: Parts per million.
PSI: Pounds per square inch.
Sanitization: To sterilize the water to keep it free
from germs and harmful bacteria.
Scale: White, gray or brownish chalky deposits on
pool walls and fixtures.
Scum: A colored ring around the pool.
Shock: A highly concentrated dose of chlorine that
raises FAC in order to kill bacteria and germs.
Skimmer: Surface strainer at the overflow or out-
flow points of a spa, used to screen out leaves or
other floating debris. It is often used to add chemi-
cals, particularly tablets, to the circulating water.
Stabilizer: Cyanuric acid that forms a loose bond
with the chlorine ion to keep the chlorine from
dissipating due to sunlight, yet allows the chlorine
ion to detach and attack harmful bacteria.
Total Alkalinity (TA): The measurement of the
water’s ability to keep the pH at the proper level. It
represents the amount of bicarbonates, carbonates
and hydroxides in water and is a measure of the
buffering capacity (its degree of resistance to a
change in pH) of water.
Water Hardness: The quantity of calcium and
magnesium dissolved in water. High levels contribute
to cloudy water and scale formation, while low
levels cause water to “attack” pool components.
GlossaryGlossary
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