Marquis Vector21 Owner's Manual page 56

Calcium Hardness
Do not use soft water in your spa. It is critical to have calcium in your water.
The ideal range of calcium is between 150 – 250 ppm. The calcium hard-
ness is normally adjusted when filling or refilling after draining the spa. High
calcium levels can cause scale buildup on spa surfaces and equipment.
Your spa can be protected against high mineral content by using Metal &
Stain Remover per the directions on the container. Low calcium levels can
cause spa water to become highly corrosive and damaging to the equip-
ment components and plumbing. To raise calcium levels, use Calcium Hard-
ness Increaser.
BALANCE
When initially filling or refilling your spa, follow these steps to achieve
proper water balance.
IMPORTANT! Always follow instructions on the chemical container when
adding chemicals.
1. Test the spa water using the appropriate test strip for your method of
sanitation. If you are using the In-line system, each product has its own
test strip for either a chlorine or bromine system.
2. If adjustments are needed for the pH and/or alkalinity, always balance
the alkalinity before balancing the pH. The product(s) you should use to
adjust pH and/ or alkalinity are pH Increaser or Alkalinity Increaser or pH &
Alkalinity Decreaser. Make any additions per the directions on the bottle
and then test and repeat if necessary until all readings are in the desired
range.
3. Increase the calcium hardness if necessary.
SHOCK
Initial Treatment
Shock the spa using granular Chlorine Sanitizer or non-chlorine Spa Shock.
Add directly to the spa per the instructions on the container. For the initial
treatment, Chlorine Sanitizer is preferred as it will also establish a residual of
sanitizer. For shocking after intitial startup, you may use non-chlorine shock.
Maintenance Treatment
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. Shock treatment rids your spa of these wastes for clear,
sparkling water. Shocking with non-chlorine Spa Shock or granular Chlorine
Sanitizer is recommended once a week or whenever the water appears dull
or cloudy or has a strong odor. Non-chlorine Spa Shock allows use of the
spa 15 minutes after shock treatment.
NOTE: A strong bromine or chlorine odor typically indicates the spa needs
to be shocked – not that there is too much bromine or chlorine in the water.
A properly balanced spa that is shocked regularly will not have an odor.
VECTOR21 SPA CARE GUIDE
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