Cleaning And Maintaining Swimming Pools, Spas, Jacuzzis, Or Hot Tubs

Chlorine Dioxide (ClO2) is an effective, safe treatment for swimming pools. It is a powerful oxidizing agent that eliminates harmful bacteria, viruses, protozoa, and foul odors from the pool without leaving any residuals or byproducts behind. Unlike chlorine bleach, it does not form cancer-causing disinfection byproducts when used.

Additionally, it offers superior sanitization power to traditional chlorine treatments while providing a pleasant and safe swimming experience. ClO2 is also easy to use with the most available pool systems, making it an ideal choice for pool owners looking for an effective and reliable solution that won’t cause any adverse health effects. With its many advantages, Chlorine Dioxide is the perfect choice for treating swimming pools. It offers superior protection against contaminants while offering a pleasant and safe swimming environment. Chlorine Dioxide is the way to go for those looking for an intelligent and safer way to maintain their pools. 

Chlorine dioxide is a powerful disinfectant that treats bacteria, viruses, and fungi effectively. This makes it an excellent choice for maintaining the cleanliness of spas, jacuzzis, or hot tubs.

To treat your spa, jacuzzi, or hot tub with chlorine dioxide, you will need to use a specially concentrated chlorine dioxide solution that is safe for aquatic environments.

Follow these steps to ensure that your spa is effectively disinfected:

  1. Drain your spa or hot tub completely, and rinse it thoroughly to remove any debris.
  2. Mix the chlorine dioxide solution according to the manufacturer’s instructions.
  3. Apply the solution to the spa or hot tub by pouring it directly into the water.
  4. Allow the solution to sit in the spa or hot tub for the recommended amount of time, usually several hours.
  5. Drain the solution from the spa or hot tub and rinse it thoroughly to remove any remaining chlorine dioxide.
  6. Refill the spa or hot tub with freshwater and run the system for several minutes to ensure that the water is well-circulated and adequately balanced.

Spa, jacuzzi, or hot tub maintenance to ensure the water is clean and safe. 

Here are some steps to follow:

  1. Begin by testing the pH and alkalinity levels of the water. Adjust these levels if necessary.
  2. Add chlorine dioxide to the water in the hot tub or spa. 
  3. The amount needed will depend on the volume of water in the tub.
  4. Be sure to follow the instructions on the product label carefully.
  5. Turn on the jets and circulate the water to ensure that the chlorine dioxide is distributed evenly.
  6. Let the water circulate for at least 30 minutes.
  7. Test the chlorine dioxide levels to make sure they are within the recommended range. 
  8. Adjust the levels as necessary.
  9. Repeat this process once a week to maintain the cleanliness of the water in your spa, jacuzzi, or hot tub.

By using chlorine dioxide to treat your spa, jacuzzi, or hot tub, you can ensure that it is free of harmful bacteria and other contaminants, providing a safe and enjoyable experience for you and your guests.

It’s important to note that chlorine dioxide should not be used as a replacement for regular cleaning and maintenance of your spa or hot tub. You should still clean the filters, wipe down the surfaces, and drain and refill the water regularly. Chlorine dioxide can be a valuable tool in maintaining water quality and preventing the growth of harmful bacteria, but it should be used as part of a comprehensive maintenance routine.


Use for non-potable treatment on beverage and fountain drink equipment (breweries, wineries, and dairies), related storage (holding tank), transfer and dispensing lines of this equipment, filtration/humidification systems, process water for final rinse of containers, including bottles, plastic, glass, or metal cans and kegs ensuring visible wetness. For decorative, ornamental, or operative systems such as swimming pool, spa, hot tub, (with pH 7.2-7.6) once-through and recirculating cooling towers, R.V., fleetes, marine, or aircraft storage for potable and non-potable water. Prepare activated solution to a strength consistent with the threshold for general cleaning and antimicrobial uses, to prevent, inhibit or remove buildups, disinfect wastewater, or eliminate odor in fouled water.

Mix EQUAL PARTS 1:1  –  NaClO2 (Part A) and HCl (Part B)
(Batch or Meter)
Continuous 5 PPM 
Shock 50 PPM
Heavily Contaminated 100 PPM
5 drops A, with 5 drops B 1 gallon of water
50 drops A, with 50 drops B in 1 gallon of water. (2ml = 50 drops)
100 drops A, with 100 drops B in 1 gallon of water. (4ml = 100 drops)
Retention Basins, Ponds, and Decorative Fountains Where fish are NOT present.Light 5 PPM 
Heavy 10 PPM
5 drops A, with 5 drops B in 1 gallon of water
10 drops A, with 10 drops B in 1 gallon of water
Recirculating Cooling 
Towers and Systems
Light 0.25 PPM 
Moderate 1 PPM 
Initial Dose Heavy 5 PPM
1 drop A, with 1 drop B in 4 gallons of water
1 drop A, with 1 drop B in 1 gallon of water
5 drops A, with 5 drops B in 1 gallon of water
Once Through (NON-Recirculating) Systems.  Slug (Interference with municipal or non-domestic Publicly Owned Treatment  POTW), OR Continuous (Unimpeded)

Slug Dose 
  Intermittent/Light 5 PPM 
  Moderate 15 PPM 
  Heavily Contaminated 25 PPM 
  Light 0.25 PPM 
  Moderate 1 PPM 
  Heavy 2 PPM
Slug Dose
5 drops A, with 5 drops B in 1 gallon of water
15 drops A, with 15 drops B in 1 gallon of water
25 drops A, with 25 drops B in 1 gallon of water
1 drop A, with 1 drop B in 4 gallons of water
1 drop A, with 1 drop B in 1 gallon of water
2 drops A, with 2 drops B in 1 gallon of water

Mix in the bottom corner of a designated plastic mixing container. Let the solution activate for 1 minute before dilution, then fill the container with the appropriate quantity of clean water. Agitate until mixed. Use as a solution for batch treatments, shock treatments, remedially, intermittent, periodic, or continuous operation injected with a metering system to maintain desired results for system concentration and decontaminated storage. To apply: Circulate water in normal operation until desired results are achieved in the system. For pool or spa, apply when no people are in the water. Fill, flush, immerse, circulate or spray tank, line, equipment, or food contact surface with an active solution for 10 minutes ensuring all surface area is thoroughly wet. After sanitizing, drain the tank, line, or equipment, followed by thorough rinsing with potable water, for at least one (1) minute. Allow airing dry or drain-drip.

  • SPRAY / FOG – allow visible wetness for 5 minutes before drying. 
  • SWAB / SPONGE – allow visible wetness for 5 minutes before drying. 
  • SOAK / IMMERSE  – allow to drench or submerge for 1 minute. 
  • FLUSH / FILL – allow to drench or submerge for 1 minute. 
  • DIP / RINSE – allow to drench or submerge for 1 minute.


Bohner, H. F., & Bradley, R. L. (1991). Corrosivity of chlorine dioxide used as sanitizer in ultrafiltration systems. Journal of dairy science, 74(10), 3348-3352.
Capozzi, V., Fiocco, D., Amodio, M. L., Gallone, A., & Spano, G. (2009). Bacterial stressors in minimally processed food. International journal of molecular sciences, 10(7), 3076-3105.
Decision, R. E. (2006). for Chlorine Dioxide and Sodium Chlorite (Case 4023). US EPA, 3-4.
Frisbie, S. H., Mitchell, E. J., & Sarkar, B. (2015). Urgent need to reevaluate the latest World Health Organization guidelines for toxic inorganic substances in drinking water. Environmental health, 14(1), 1-15.
Jacangelo, J. G. (Ed.). (2002). Inactivation of waterborne emerging pathogens by selected disinfectants. American Water Works Association.
Korich, D. G., Mead, J. R., Madore, M. S., Sinclair, N. A., & Sterling, C. (1990). Effects of ozone, chlorine dioxide, chlorine, and monochloramine on Cryptosporidium parvum oocyst viability. Applied and environmental microbiology, 56(5), 1423-1428.
Lénès, D., Deboosere, N., Ménard-Szczebara, F., Jossent, J., Alexandre, V., Machinal, C., & Vialette, M. (2010). Assessment of the removal and inactivation of influenza viruses H5N1 and H1N1 by drinking water treatment. water research, 44(8), 2473-2486.
Zhang, Z., McCann, C., Stout, J. E., Piesczynski, S., Hawks, R., Vidic, R., & Victor, L. Y. (2007). Safety and efficacy of chlorine dioxide for Legionella control in a hospital water system. Infection Control & Hospital Epidemiology, 28(8), 1009-1012.

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