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Water Chemistry

Balanced spa water that is properly maintenanced will provide the most enjoyment and help to lengthen the life of your spa's equipment.

Sanitizers:  A proper disinfectant level of 2 to 4 ppm (parts per million) is recommended to keep water safe and bacteria-free.

  • Bromine is the most common and easiest to use sanitizer.  It can be dispensed automatically by way of a "floater."
  • Chlorine, Baquacil, and Nature 2 are other common sanitizers.
  • Ozone is a gas that is produced by exposure of oxygen to ultraviolet light.  When introduced into spa water, it is a powerful sanitizer.  Ozone gas is odorless and colorless and can help to keep water cleaner and clearer longer.  It is injected into the spa water (when the pump motor is running) through the venturi which pulls the gas through one of the spa's jets or a special ozone fitting, usually near the bottom of the spa.  Ozone gas does dissipate quickly, so it is recommended that the filter be run at least two to three hours every twelve hours.  Ozone is most effective when used in combination with other sanitizers (bromine, chlorine, Nature 2, etc.) and helps cut down on that "chemical" smell.

Water Balance:

  • pH:  The proper pH level will range from 7.2 to 7.8.  Water that is too alkaline (pH above 7.8) can cause harmful scale to build up on spa equipment.  Water that is too acidic (pH below 7.2) can corrode pump seals and plumbing.  Water that is properly balanced helps maximize your sanitizer's effectiveness and lessens that "filmy" feeling on your skin.  There are several pH balancing products on the market today that make it fast and easy to maintain proper pH levels.
  • Total Alkalinity (TA):  The proper TA level will range from 80 to 120 ppm and is an indicator of your water's ability to resist changes in pH.  When TA is properly maintained, pH levels will be less likely to fluctuate.
  • Calcium Hardness ("hard" vs. "soft" water):  Acceptable calcium levels range from 150 to 300 ppm.  Levels below 150 ppm can cause early failure of equipment.

Shock Treatments:  Organic debris in your spa water (soap film, perspiration, body lotions, etc.) serves as food for bacteria and algea.  These particles are often too small to be trapped by the filter.  Regular shock treatments (every week or two) can help eliminate these particles.

Test strips are available to quickly and easily monitor your water's chemistry.