If you want to have a healthy hot tub experience, it is important to keep the water in your spa sanitized. Sanitizing kills bacteria that grow in warm water. It can be intimidating or confusing to figure out, but learning about, and purchasing the proper sanitizer(s) for your hot tub is easy.

Sanitizers are usually made up of one or more of the following chemicals: chlorine, bromine, or biguanide. There are other supplemental purifiers that you can purchase, but to sanitize the water in your hot tub, you need to use one of the three chemicals mentioned above.

Hot Tub Sanitizer Reviews

SpaChoice 472-3-5081 Chlorine Granules for Spas

SpaChoice 472-3-5081 Chlorine Granules for Spas and Hot Tubs, 5-Pounds
  • Dissolves Quickly and Completely
  • Stabilized Spa Chlorine
  • 56% Available Chlorine
  • Controls Algae
  • Kills Bacteria

This five pound tub of chlorine granules will keep you supplied for a while (depending on how often you “shock” your hot tub.) The Spa Choice Chlorine Granules for Hot Tubs and Spas (472-3-5081) completely and quickly dissolves and is a stabilized spa chlorine which contains 56% available chlorine. It controls algae, kills bacteria, and destroys organic contaminants. The life of your chlorine is extended because these chlorine granules from Spa Choice, are stabilized to protect against the sun’s ultraviolet radiation.

Several customers mentioned that they thought this size tub of chlorine granules are a good value for the price. People do mention that it does not come with a scoop and they found that it was a little difficult to open the lid. According to one person, it does work as advertised.

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Spa Essentials 32362000 Brominating Concentrate Granules for Spas

Spa Essentials 32362000 Brominating Concentrate Granules for Spas and Hot Tubs, 2-Pound
  • One step fast dissolving brominating granules
  • May be added directly to spa, no pre-dissolving needed
  • Brand: Spa Essentials
  • Item Weight: 2.0 lbs

There are four packaging sizes that this product comes in, offered by Spa Essentials: an one pack, two pack, four pack, or 12 pack for your convenience. According to the manufacturer, you do not need any other product besides the Spa Essentials: “Brominating” Concentrate Granules for Spas and Hot Tubs (32362000) to treat your hot tub, it acts as a sanitizer and an oxidizer. You do not have to dissolve the granules before placing them in your spa, they may be added directly to the water. This product is designed to control and kill bacteria. Spa Essentials claim that their brand is the easiest to use in order for you to achieve and maintain clean and beautiful hot tub water. The formula contains 82.5% sodium dichloro-s-triazinetrione, and 14.7% sodium bromide.

A person who has used this product says that they have owned a spa and used this product for over ten years. Using this product is easy for them, they just place one tablespoon of the granules into the hot tub after every use and turn on the cleaning cycle for ten minutes. Another customer was able to turn around a very bad problem with algae in their hot tub by using this product when others did not do the job. Others have mentioned that this Spa Essentials item works for them when other products did not.

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Leisure Time Spa Sanitizer Free Sanitizing System

Leisure Time Spa Sanitizer Free Sanitizing System (45500A)
  • Compatible with the Leisure Time Free sanitizing system or biguanide sanitizing systems
  • Test your spa water with Leisure Time Spa and Hot Tub Test Strips regularly and keep Leisure Time Free sanitizer levels between 30 - 50 ppm at all times
  • For more than 25 years, Leisure Time has been the premier name in spa water care
  • Compatible with the leisure time simple spa care products
  • Gentle on eyes, hair, and skin

Leisure Time sells this 16 ounce product in three different packaging sizes: one pack, four pack, and 12 pack. This company has been manufacturing pool and spa chemicals for over 25 years and claim that they have been the premier name in water care for spas. This product – Leisure Time: Biguanide Based “Leisure Time Free” Sanitizer (45500) is compatible with other spa care products that they manufacturer and sell. Nearly odor free, this product is gentle on skin, hair, and eyes. Leisure Time recommends that you test your hot tub with its spa and hot tub test strips to get the information you need to put the right amounts of chemicals into your spa. This sanitizer is 100% bromine and chlorine free, and should control bacteria longer than those two chemicals. The manufacturer claims this product is safer to use and store than other hot tub sanitizing chemicals, and should be added weekly after testing with strips. This product comes in a liquid form.

One happy customer is pleased with every product they have purchased from this company. They explained that their water is “hard” and they appreciate the liquid form of this sanitizer. Another person likes this product better than using chlorine which leaves an unpleasant smell and strange residue on their swim suits. Customers mention that it is a good product that does not harm or irritate even sensitive skin. For over a decade, one person has used the Leisure Time products (including this one) because it has no smell, does not fade swimsuits, and does not burn eyes.

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There are many factors to consider when you need to purchase a hot tub sanitizer. You should look at your hot tub manufacturer’s suggestions for using particular chemicals to sanitizer your particular spa. Depending on the area where you live, you may have hard or soft water (this needs to be taken into account when selecting products to use.) If you have skin sensitivity issues, it is important to use chemicals that will not irritate delicate skin.