There are different ways in which to treat your swimming pool, the main ones being chlorine, bromine, and salt (which produces chlorine). After having spoken about chlorine in our previous article, here is another form of treatment, bromine. But what is it? What are the advantages and the disadvantages? How is it measured? Find all the answers to these questions below.


Bromine is a chemical element which is one of the halogens like fluorine and chlorine. It is present in sea-water. Like chlorine, it possesses the qualities of being a disinfectant, an algicide (preventative) and it is long-lasting (it purifies the water and destroys germs there and then).

It is something that is little known in Europe but is used a lot the other side of the Atlantic. Bromine is the perfect substitute for chlorine when someone is sensitive to it in your family.


1) No risks for your skin 

Bromine is odorless and less aggressive than chlorine. Furthermore it is not an irritant to your skin and eyes.

2) Not sensitive to UV rays

Effectively, bromine is barely sensitive to UV  rays therefore it does not need to be stabilized in any way. Thus there is no risk of over-stabilization.

3) All around efficiency

Despite being reactive, bromine remains efficient even if: the pH of your water is high (for example with a pH of 8: the rate of efficiency is 80% whereas chlorine’s is 20%).  The same goes for high temperatures. Since it is not very sensitive to heat, it is effective at treating warm water such as those found in hot tubs or heated pools…


Compared with chlorine, bromine brings a lot more advantages. However, it remains 40% more expensive. Furthermore, you need to handle it with great caution because it is corrosive (that is to say that it could destroy your equipment). You will need to buy a brominator if you want to use it in pellet form.


First of all, it is available in the form of tablets, which you can simply place in the skimmer and leave them to work. Secondly, it exists in pellets. This must be placed in a brominator which is directly linked with your filtration system.


Your level of bromine should be between 1 and 2 mg/liter. For best results keep your pH below 7.5. Otherwise you will have to check this before measuring the bromine levels.  

To conclude, bromine is an alternative to chlorine but its price can be between 48 and 80 € for a bucket of 5kg.


I am ICO, your connected device which measures, predicts, and adapts your advice and sends you notifications on your smartphone.

I am compatible with swimming pools treated with chlorine, bromine, and salt. It doesn’t matter what treatment you use, I will always be there to predict the variation in the quality of your water and make recommendations.  

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