CalderaSpas CalderaSpas Utopia Series, Owner'S Manual

Page 12

Water Quality and Maintenance

OZONE MAINTENANCE (IF EQUIPPED)

If Reduced or no ozone bubbles are coming from the heater return 

(clogged ozone injector) or no ozone, clean the injector: 

DANGER: 

Nitric acid accumulates in the air lines of the ozonator 

and injector, and will cause severe chemical burns if direct skin contact 

is made. Always wear protective gloves, glasses and clothing when 

working on the ozonator or injector lines. To prevent inhalation or 

ingestion of the nitric acid, DO NOT blow or inhale with your mouth to 

any of the adapters, fittings or tubing of the ozonator or injector air lines.
1. Place 16 ounces (.5 liter) of white vinegar into a cup or bucket.
2. Carefully loosen the long tubing attached to the bottom of the 

ozonator, located in the equipment compartment.

3. Place the end of the tubing into the vinegar, making certain that the 

end of the tubing sits at the bottom of the container.

4. Run the spa until all 16 ounces (.5 liter) of the vinegar is gone. This 

should allow an ample flow of vinegar to be run through the injector and 

clear the blockage.

5. Reinstall the tubing to the bottom of the ozonator.
Water chemistry damage is not covered by the warranty.  The chemical 

levels and water quality in the spa are under your direct control. 

With proper basic care, the spa will provide many years of hot water 

relaxation. If you are unsure about any chemical or its usage in the spa, 

contact your Authorized Dealer, or 

WATKINS WELLNESS

.

DO:

•  Add all chemicals slowly into the filter compartment with the jet pump 

operating for ten minutes.

•  Use special care if using baking soda to clean either the interior or 

exterior plastic surfaces.

•  Use granular (dichlor) or liquid (sodium hypochlorite) chlorine.

IMPORTANT:

WATKINS WELLNESS

 DOES NOT recommend the 

use of any floating chemical dispenser. Damage to the spa shell or 

components caused by a floating chemical dispenser is specifically not 

covered under the terms of the limited warranty.  Floating dispensers can 

become trapped in one area and cause an over-sanitization or release 

large chunks of sanitizer that very quickly chemically burn the shell and 

cover.  

DON'T:

•  Use compressed sanitizers.
•  Use a floater type sanitization system as a low or no maintenance 

solution to your spa maintenance program.

•  Use a sanitizer which is not designed for spas.
•  Use swimming pool (muriatic) acid to lower pH.
•  Broadcast or sprinkle the chemicals onto the water surface. This 

method may cause chemically-induced spa surface blistering (chemical 

abuse).

VACATION WATER CARE 

INSTRUCTIONS

If you plan to be away from home, follow these instructions to ensure 

that the water quality of your spa is maintained:

SHORT TIME PERIODS (3-5 DAYS)

1. Adjust the pH by following the instructions outlined in the Water Quality 

and Maintenance section.

2. Sanitize the water by following the shock procedures also listed in the 

Water Quality and Maintenance section.

3. Lock your cover in place using the coverlocks.
4. Upon your return, sanitize the water by following the shock procedures, 

and balance the pH.

5. If 

FRESHWATER

 Salt System is installed, please refer to Tips section, 

vacation or limited use in the Salt System Owner's Manual.

LONG TIME PERIODS (5-14 DAYS)

Prior to leaving:

1. At least one day before you leave, set the temperature to its lowest 

level. This setting should represent an approximate water temperature 

of 80°F (27°C)

 IMPORTANT:

 Spa water oxidizers such as sodium dichlor (chlorine) 

maintain their level of effectiveness substantially longer in warm water 

80°F 

(27°C)

 than in hot water 101°F to 104°F (38°C - 40°C).

2. Adjust the pH as required. Sanitize the water by following the shock 

procedures.

Upon your return: 

3. Sanitize the water by following the shock procedures. Return the set 

temperature to its original setting. The spa water will be safe for you to 

use once the Free Available Chlorine residual level has dropped below 

5.0 ppm.

IMPORTANT:

 If you will not be using your spa for an extended period 

of time (in excess of 14 days) and an outside maintenance service (or 

neighbor) is not available to assist with the water maintenance, draining 

or winterizing of the spa is recommended.