User Guide

-9-
Soft Water: A low calcium hardness level (soft water) can etch the
spa’s plaster and corrode the equipment. The recommended calcium
hardness level should not fall below 200 ppm. Add Spa Choice
®
Increase Calcium to raise the calcium hardness level.
1. Determine your calcium hardness level. One ounce
of Spa Choice
®
Increase Calcium per 500 gallons
increases the hardness level by 7 ppm.
2. Pour the determined amount into the spa with the
circulation on.
3. Circulate the water for 20 minutes.
Alkalinity
You will need:
Test Strips
Spa Choice
®
Alkalinity Up
When the total alkalinity level is in range, it acts as a buffer to keep
the pH level constant. Always adjust the alkal i ni t y be f ore adjusting
he pH . The recommended total alkalinity level is 80 – 140 parts per
million (ppm). Use the Test Strips that come with your Spa Choice
®
Spa Kit to determine your spa’s total alkalinity level. Add Spa
Choice
®
Alkalinity Up to adjust your total alkalinity.
If the total alkalinity reads outside the recommended range:
1. Dissolve 1 oz. (2 tablespoons) of Spa Choice
®
Alkalinity Up in a small plastic pail of water and
add to spa.
2. Allow water to circulate for 30 minutes.
3. Retest alkalinity level of the spa water and repeat, if
necessary, until the recomme nde d level is reached.
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