Hot Tub: Chlorine or Bromine?

Hot Tub: Chlorine or Bromine?

Chlorine vs. Bromine for Hot Tubs: Which One is Right for You?

If you’re the proud owner of a hot tub, you know that keeping it clean and healthy is essential. One of the most important decisions you’ll make is choosing the right sanitizer to use. The two most popular options are chlorine and bromine.

Both chlorine and bromine are effective at killing bacteria and algae, but they each have their own advantages and disadvantages. Here’s a look at the pros and cons of each so you can decide which one is right for you.


Chlorine is the most common sanitizer used in hot tubs. It’s effective at killing bacteria and algae, and it’s relatively inexpensive. However, chlorine can be harsh on skin and hair, and it can also irritate the eyes.

Chlorine also has a strong odor that some people find unpleasant. And, if you don’t use the right amount of chlorine, it can create chloramines, which can be harmful to your health.


Bromine is a good alternative to chlorine for people who are sensitive to its effects. It’s less irritating to skin and hair, and it doesn’t have the same strong odor. Bromine is also more effective at killing bacteria and algae than chlorine.

However, bromine is more expensive than chlorine, and it can be more difficult to find. It’s also important to note that bromine can be corrosive to some metals, so you’ll need to make sure your hot tub is made from materials that are compatible with bromine.

So, Which One Should You Choose?

The best sanitizer for your hot tub depends on your individual needs and preferences. If you’re looking for an effective sanitizer that’s easy to find and relatively inexpensive, chlorine is a good option. However, if you’re sensitive to chlorine or you want a sanitizer that’s less harsh on skin and hair, bromine may be a better choice.

Ultimately, the best way to decide which sanitizer is right for you is to talk to your hot tub dealer. They can help you assess your needs and choose the sanitizer that’s best for your hot tub.

Other Factors to Consider

In addition to the type of sanitizer you choose, there are a few other factors you’ll need to consider when keeping your hot tub clean and healthy. These include:

  • Water temperature. Hot tub water should be kept at a temperature of 104-108 degrees Fahrenheit. This temperature helps to kill bacteria and algae.
  • pH level. The pH level of hot tub water should be between 7.2 and 7.8. If the pH level is too high or too low, it can make your hot tub less comfortable and can also damage the hot tub itself.
  • Alkalinity. The alkalinity of hot tub water helps to buffer the pH level and keep it stable. The alkalinity level should be between 80-120 parts per million (ppm).
  • Sanitizer level. The sanitizer level in hot tub water should be between 2 and 4 parts per million (ppm). This level will vary depending on the type of sanitizer you use.

It’s important to test the water in your hot tub regularly and to adjust the pH level, alkalinity, and sanitizer level as needed. By keeping your hot tub water clean and healthy, you can enjoy your hot tub safely and for many years to come.

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