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marquis care and enjoyment guide
Alkalinity
Alkalinity acts as a buffer to prevent the pH level from
changing as other substances are added to the water.
Proper alkalinity is directly related to the stability of the
pH. The alkalinity should be between 80 - 120 ppm.
Alkalinity levels below 80 ppm make it very difficult to
stabilize the pH level. Levels above 120 ppm may
increase pH levels and cause cloudy water, scaling,
and decreased efficiency of the sanitizer.
pH Level
The pH level measures the relative acidity and basicity
of the water. The ideal pH level is 7.2 - 7.8. When the pH
level falls below 7.2 the water can become corrosive.
Low pH can cause damage to metal in the equipment
pack and heaters, excessive sanitizer consumption,
and skin irritation. A pH level above 7.8 can be scale-
forming and allows metals or minerals in the water to
form deposits and stain spa surfaces.
Shocking
Once bacteria and other wastes are neutralized by the
sanitizer, they stay in the water unless oxidized or
shocked. Often called chloramines or bromamines,
they create dull, cloudy water and can cause odor and
eye or skin irritation. Marquis Spa Shock rids your spa of
these wastes for clear, sparkling water. Shocking is
recommended once a week or whenever the water
appears dull or cloudy or has a strong chlorine odor.
NOTE: A strong chlorine odor indicates that the
spa needs to be shocked – not that there is too
much chlorine in the water. A properly bal-
anced spa that is shocked regularly will not
have a chlorine odor.
PAGE 49
MARQUIS SPAS
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