Read This If You Are Switching From Chlorine To Bromine In Hot Tub?


You can shift from using bromine to chlorine in your hot tub. It’s important to note that you cannot add chlorine in the water that has bromine. Chlorine activates bromine in water, meaning that the bromine will take a very long time to dissipate completely.

Therefore, your only choice is draining the water with bromine inside. Then, clean your hot tub thoroughly, including the filters. Finally, fill the hot tub with fresh water and add your chlorine.

What is better bromine or chlorine?

There’s no straightforward answer to this question because the sanitizer of your choice depends on your usage, specific needs, and budget. Both chlorine and bromine are effective sanitizers for use in hot tubs. We cannot emphasize enough the importance of using sanitizers because they kill any germs that may spread diseases to the hot tub users.

To help you make a decision, you should understand how each of the two sanitizers works. Chlorine is the most popular sanitizer probably because it’s cheaper than bromine. However, chlorine is extremely sensitive to any changes in your pH levels to the point where it stops working after pH changes even for a bit.

Chlorine is also the best sanitizer if you want to give your water a fresh look, without causing any irritations to the skin and eyes. Chlorine also tends to make the water have a bad odor.  With chlorine, you also need to use stabilizers together with the chemical, and you need to add it frequently if you want to have optimal results.

On the other hand, bromine is easier to use and lasts longer than chlorine. Another advantage of bromine is that it eliminates bad odors from the water, and you don’t need any stabilizers when using bromine as a sanitizer.

Bonus reading

Would You Like To Find Out More About Bromine Usage ?

One of my most read articles on this website is about Bromine and how to use it in the hot tub. I personally prefer bromine over chlorine. If you would like to read it, click here.

Does chlorine react with bromine?

Yes, chlorine reacts with bromine, and if mixed, they can lead to an explosive chemical reaction. If you want to switch one for the other, you need to deep-clean your hot tub to make sure no residue is left.

What happens if you mix bromine and chlorine?

To understand what would happen if you mix chlorine and bromine, let’s discuss the components of bromine. Chlorine and bromide ions make up bromine, and if bromine and chlorine mix, bromide ion converts the chlorine into bromine.

Is bromine in a hot tub bad for you?

The discussion on whether bromine is dangerous to use in a hot tub never ends. At the same time, you cannot entirely forego the use of bromine or chlorine as a sanitizer because your spa could become messy. There are claims that bromine causes cancer, respiratory problems, and weakens the immune system. While all these could be true, what can you do to protect yourself?

The use of bromine floaters to disseminate the bromine granules in the water means you get into contact with the harsh chemicals every time you use your hot tub. Therefore, to avoid having respiratory problems and low immune systems, always use bromine in the right quantities. Read the instructions manual to understand what works for your spa. Of course, the size and amount of water in the hot tub determines the amount of bromine to use.

Another tip that can help you minimize the way bromine reacts with impurities is taking a shower before getting into the spa. By doing so, the bromine doesn’t have to work hard to kill any bacteria, thus releasing less bromide vapor likely to cause respiratory problems.

Is bromine a positive or negative ion?

Bromide ion forms neutral atom bromine, which is negatively charged. Ideally, bromine reacts by gaining an electron forming a negative bromide ion.

What is the difference between bromine and chlorine?

Chlorine dissolves quickly in water, whether used in the form of granules, tablets, or liquid. As the chlorine dissolves, it combines with ammonia and nitrogen compounds in water, forming chloramines. Compounds of chloramine are inactive and cannot effectively disinfect the water in your hot tub. Therefore, after some time, you need to administer shock treatment to break the chloramines down before adding fresh chlorine to the water.

Bromine, on the other hand, dissolves slowly into the water, meaning that a small amount can work for a long time. Bromine breaks down into bromamine compounds while sanitizing your spa. These compounds don’t break down easily and can reactivate to function for a more extended period. Bromine is also effective for use in a variety of temperatures and pH levels compared to chlorine.

Does bromine kill algae?

Yes, bromine is a sanitizer that kills any bacteria, mold, algae, and other microorganisms present in the water.

Does bromine increase alkalinity?

No, bromine doesn’t increase the alkalinity of water in a hot tub. Bromine has a pH of about 4, and using it will result in a lower pH and alkalinity of water over time. Therefore, you need to add a base to the water sanitized using bromine so that you can increase its alkalinity.

What bromine smells like?

Bromine is naturally liquid and has a brownish color. Compared to chlorine, bromine has a less pungent smell. However, if you’re sensitive to smell, you can identify bromine to have a bleach-like odor.

Editorial Staff

I'm Adnan Sabanovic, the guy behind Hot Tubs Report. I've had a chance to enjoy hot tubs last few years and have really become interested in owning one of them. Nearly every weekend you'll find me spending time with my family or playing sports. If I am not doing that then I'm here writing about tubs on Hot Tubs Report. This blog is a research for my first hot tub which I decided to document and share publically so others can benefit from it as well.

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