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D. If the pH level is too high, the following may result:

• The sanitizer is less effective.

• Scale will form on the spa shell surface and the equipment.

• The water may become cloudy.

• The filter cartridge pores may become obstructed.

If the pH is too high, it can be decreased by adding sodium bisulfate (pH/Alkalinity Down) to the spa water

NOTE: After adding sodium hydrogen carbonate or sodium bisulfate, before testing the water for pH. Measurements taken too soon may not be accurate.

E. It is important to check the pH on a regular (weekly) basis. The pH will be affected by the bather load, the addition of new water, the addition of various chemicals,

and the type of sanitizer used. When the pH is within the recommended range, proceed to the final step.

MAINTAINING THE SANITIZER LEVEL

A. Sanitizer is extremely important for killing algae, bacteria and viruses, and preventing unwanted organisms from growing in the spa. At the same time, you don’t want

too high a sanitizer level, or it can irritate your skin, lungs, and eyes.

B. Always maintain the sanitizer level in your spa at the recommended level for each type of sanitizer.

C. Watkins recommends the following sanitizer:

• SPA FROG

sanitizing system (mineral and bromine)

D. Watkins also approves the following sanitizers:

• Sodium Dichloro-s-Triazinetrione (sodium dichlor or chlorine)

• Biguanide

WARNING:

DO NOT use tri-chlor chlorine or any type of compressed bromine or chlorine, acid or any type of sanitizer which is not recommended by Watkins

Manufacturing Corporation.

WATER QUALITY AND MAINTENANCE

THE WATKINS WATER MAINTENANCE QUICK REFERENCE GUIDE

Ideal Range (ppm) What Chemicals to Use

  Steps Minimum Maximum ToRaise ToLower

1 Total Alkalinity 80 180 Sodium Hydrogen Sodium Bisulfate

Carbonate, or

Sodium Bicarbonate

 2 CalciumHardness 150 400 CalciumHardness Useamixtureof

     Increaser 75%hardwater

      and25%softwater

or use a Stain and

Scale Inhibitor

 3 pH 7.2 7.8 SodiumHydrogen SodiumBisulfate

Carbonate

4 Sanitizer See section on Maintaining the Sanitizer Level