2017 Fitness Spa
LTR20171005, Rev. D
W
ater Clarity
www.calspas.com
38
Testing For:
Ideal Range (ppm)
Minimum
Maximum
Total Alkalinity
80
120
Calcium Hardness
150
200
pH
7.2
7.6
Balancing the Total Alkalinity
Balancing the Calcium Hardness
Balancing the pH
Ideal Water Chemistry
Total alkalinity (TA) is the measure of the total
levels of carbonates, bicarbonates, hydroxides, and
other alkaline substances in the water. TA can be
considered a “pH buffer”. It is the measure of the
ability of the water to resist changes in pH level.
The recommended total alkalinity is 80 - 120
ppm .
If the TA is too low
, the pH level will fluctuate widely
from high to low. Low TA can be corrected by adding
an alkalinity increaser
If the TA is too high, the pH level will tend to be too
high and may be difficult to bring down. High TA can
be corrected by adding an alkalinity decreaser.
When the TA is balanced, it normally remains stable,
although adding water with high or low alkalinity will
raise or lower the TA level.
Calcium hardness (CH) is a measure of the total
amount of dissolved calcium in the water. Calcium
helps control the corrosive nature of the spa’s water
and is why soft water is not recommended. The low
calcium content of soft water is very corrosive to the
equipment and can cause staining of the spa shell.
The recommended calcium hardness is 150 -
200 ppm .
If the CH is too low, add a calcium hardness increaser.
If the CH is too high, dilute the spa water with soft
water.
When the CH is balanced, it normally remains stable,
although adding soft water or very hard water will
raise or lower the CH level.
The pH level is the measure of the balance between acidity and alkalinity.
If the pH is too low
, it can cause corrosion of metal fixtures and the heating element. Low pH can be corrected
by adding a pH increaser.
If the pH is too high, it can cause scaling by allowing metals or minerals to form deposits and stain spa
surfaces. High pH can be corrected by adding a pH decreaser.
Sanitizers kill bacteria and other organic waste by breaking them down to non-harmful levels and are filtered
out. Before you fill your spa, you need to decide which chemical sanitizer you wish to use. Consult your Cal Spas
dealer for the right decision with regards to your lifestyle and spa usage.
We recommend either
bromine
or
chlorine
as your sanitizer. Both work well when maintained regularly.
DO NOT use trichlor . Trichlor is very acidic and the hot temperature of the spa causes it to
dissolve too quickly . It will cause damage to your spa and will void your warranty .
Whichever plan you decide on, follow it completely and don’t take shortcuts. It will provide you with clean, safe,
clear spa water with a minimum of effort. Spa owners with an ozonator still need to use a chemical sanitizer.
See page 40 for a description of how the ozonator works.
Sanitation
Using Chlorine as a Sanitizer
If you choose to use chlorine as a sanitizer, only use granulated chlorine, not liquid chlorine.
Once a week, check the chlorine level using either a test strip or a reagent kit. See the table on the following
page for the ideal range. Add one or two tablespoons granulated chlorine to the spa water weekly. Note that
chlorine dissipation rate will be faster at higher water temperatures and slower at lower temperatures. When
you add chlorine, open all of the jets and run the spa at high speed with the cover open for at least 30 minutes.
Follow the maintenance schedule on page 40.
Summary of Contents for F-1222
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