Owner`s manual

Spa Water Chemistry
41
Caution:
Do not use your spa until the pH level of the water is between 7.2 and 7.6.
A pH level below 7.2 or above 7.6 may damage the spa shell and power
pack, and void your warranty.
All water is either acidic, alkaline, or neutral. pH is defined as a method of
measuring this characteristic. A pH level of 7.0 would be neutral. A pH
level above 7.0 would be alkaline while a pH level below 7.0 would be
acidic. The pH level of your spa water must be kept between 7.2 and 7.6.
Above 7.6 the water will become discolored and cloudy. pH levels below
7.2 will cause corrosion to metals in the circulation system. Both high and
low pH levels will cause eye irritation. Improper pH levels also reduce the
effectiveness of disinfectants.
Maintain an ideal pH level as follows:
1. Test the pH level of the water regularly with a reliable test kit.
2. Adjust the pH level as required.
- Increase pH by adding soda ash.
- Decrease pH by adding sodium bisulfate.
3. Refer to the table below and determine the dosage level per
100 gallons.
4. Add chemicals to at least one gallon of water.
5. Pour the mixture into the spa with circulation system on.
6. Wait at least 3 hours. Recheck the pH level.
High pH - Add Sodium Bisulfate (pH down)
Test Reading Dosage [per 100 gal.]
Above 8.4 .24 oz. [1 teaspoon]
8.0 to 8.4 .16 oz. [.7 teaspoon]
7.8 to 8.0 .08 oz. [.4 teaspoon]
7.2 to 7.6 Ideal
Low pH- Add Soda Ash (pH up)
Test Reading Dosage [per 100 gal.]
Less than 6.5 .6 oz. [3.6 teaspoons]
6.5 to 6.8 .45 oz. [3 teaspoons]
6.8 to 7.2 .12 oz. [.7 teaspoons]
7.2 to 7.6 Ideal
pH Control
}
8.2
7.8
7.6
7.2
6.8
Note:
If the instructions that accompany
the pH adjusting chemicals differ
from those given here, follow the
instructions that come with the
chemicals.
pH
Level
above 7.6
Add
Acid
Ideal
Below 6.8
Add
Soda Ash