WATER CHEMISTRY FOR YOUR HOT TUB OR SPA There are 2 goals of proper water chemistry: Protecting the bathers and protecting the equipment.

Protecting the bathers:

Keep the water clean and sanitized by maintaining the bromine or chlorine within their recommended levels:

  • Bromine = 2.8-3.5 ppm
  • Chlorine = 0.8-1.5 ppm

(If your spa is equipped with an ozone generator, you may choose to maintain the chlorine or bromine at the lower end of their ranges.)

Shocking the water with a non-chlorine shock oxidizes the water removing organic waste, helping the sanitizer work more effectively and removes odors. One teaspoon of shock is recommended at the end of the day of use.

Maintain the pH between 7.2-7.8. In this range bathers are comfortable, the spa surface and equipment are protected and the sanitizers perform efficiently.

Drain and refill the spa every 3-6 months.

Protecting the equipment:

As already stated, maintain the pH between 7.2-7.8. This range ensures that the spa surface and equipment are protected and the sanitizers perform efficiently.

Clean the filter 2-4 times a month, soak the filter in a filter or cartridge cleaning solution every 3 months and replace it every 12-18 months to ensure proper water flow so as not to damage the spa equipment.

Drain and refill the spa every 3-6 months, once the tub is full of fresh water, a metal remover is recommended to remove excess metals from the water that may damage the heater or pump seal.

Test the water:

To ensure that the spa water is properly balanced and safe.

  • To detect and avoid problems.

Liquid test kits or test strips, you decide:

  • Liquid test kits provide a more accurate measurement of sanitizer and pH.
  • Test strips are more convenient and quick, however, their accuracy is debatable.

Monitor the sanitizer level by testing 1-2 times a week. If the levels are not in the proper range, adjust as necessary.

Maintain the pH level between 7.2 and 7.8. If the pH is low, add a pH increaser. If the pH is high, add a pH decreaser, following the directions on the bottles.

Cleaning the Filter:

We recommend that you clean your filter 2-4 times per month with your garden hose.

  • Remove the filter cartridge from the spa's filter housing.
  • Use a garden hose with a straight flow nozzle to wash down the filter element. Work from the top down, holding the nozzle at a 45 degree angle and wash all the pleats with emphasis between pleats.
  • Rinse until all dirt and debris are gone.
  • Place back in the spa's filter housing.

Every 3-4 months clean the filter with a filter cartridge cleaning solution such as Filter Clean to break down the perspiration, suntan lotions and other oils present in the water.

Energy/Tub Saving Tips:

To reduce energy consumption on your spa and prolong the life of the spa, here are some simple tips.

Keep lid closed when not in use. This keeps debris out of the tub, prevents the sun from cooking the tubs surface and the components on the top of tub, such as the topside and control knobs. The sun will discolor the knobs, cause the topside to darken to make the LED/LCD display unreadable and can cause diverter and on/off valves to shrink and cause the caps to blow off once the pump(s) come on. Keeping the lid closed also eliminates loss of heat in the cooler weather which means the heater works less prolonging its life and reducing the electricity usage of the spa.

When the lid is closed, turn off air valves*. These valves pull air into the water from outside or under the tub. This air is pulled in anytime the pump(s) run and the valves are open. The air in the winter is cooler than the water causing the water to drop in temperature and making the heater come on more. In the summer the air valves pull in hotter air causing the tub to increase in temperature and possibly go into an overheat situation. The popping air bubbles can also shorten the lids lifespan by throwing chemicals from the water onto the underside of the lid causing the lid to become rough, crack, shrink and destroy the foam inside. These effects can cause the lid to become heavy with water weight or dry out and become light, flimsy or warped causing a poor seal to the tubs surface allowing heat to escape and debris to get in.

*If you have a forced air system, common on some Maax and Coleman Spas, do not turn off the air valves. By doing so you will blow the diaphragms in the venturi caps causing a loud whistling sound and loss of air pressure in the tub.