Water chemistry is critical in a spa system. Chemicals are used to sanitize the water and control the pH balance. The combination of high temperature and small volume means that the chemical balance must be watched carefully. It is recommended that you purchase a chemical start up kit, and the additional chemicals needed to maintain the proper/optimum chemical balance.

Sanitizing

Sanitizing your water destroys harmful organisms and keeps your spa healthy and safe. Two commonly used spa sanitizers are bromine and chlorine, with ozone being used as an oxidizer. Chlorine and bromine are chemicals that you will add to the water. Ozone is a gas that is produced by an ozonator and injected into the water. It is important that a residual of sanitizer remain in your water. High water temperature, aeration and use will increase the need for sanitizer.

In addition to maintaining a residual, it is important to 'shock' your spa water periodically and after heavy use. This addition of substantial amounts of sanitizer super-chlorinates the water and oxidizes non-filterable organic residue. Allow the sanitizer level to drop back to the residual amount before using. Also use your 'Clean Up Cycle' after heavy use for additional filtration.

pH Level

pH is a balance of acidity and alkalinity in the water. Maintaining proper pH is important for the effectiveness of your sanitizer, for user comfort and to prevent corrosion of the spa equipment.

Please note: Keep a chlorine or bromine residual of 3.0 to 5.0 ppm. Tests should be done daily with your test kit.

Please note: Never mix two chemicals together. Never store any chemicals in the equipment compartment.

Please note: Do not use muriatic acid to balance pH as it will damage your spa surface and equipment.

Recommended Levels:

pH: 7.2–7.6 (Ideal 7.4–7.6)
Sanitizer Residual: 3.0–5.0 ppm
Total Dissolved Solids: 100–200 ppm
Free Available Sanitizer: 3.0–5.0 ppm

Please note: Make sure you use fresh test kit reagents. They
lose their accuracy with age. (Date the bottle upon purchase). Recommended to use tri-color vs. di-color test kit.

Total Alkalinity: 80–100 ppm ideal for dichlor, and bromine.

Sanitizing with Ozone

Spas vary in size and the amount that they are used will vary considerably from family to family. For this reason you will need to establish your sanitizing program based upon your own personal use. When using ozone you should start by balancing your water chemistry as you normally would. A spa should run and be ozonated no less than six hours per day. This starting point should not be considered final. If your
spa is heavily used, this run time should be increased. Your spa produces ozone during filtration cycles.

The amount of a residual sanitizer (chlorine or bromine) that you maintain in the water will also vary depending on use. It is recommended that you maintain a residual of 3.0–5.0 ppm. Periodically, and after periods of heavy use, it is necessary to 'shock' your spa with additional amounts of sanitizer. Refer
to your spa care products for further information.