As an alternative to chlorine, bromine is a great spa and hot tub sanitizing agent to eliminate microbial and bacterial contamination. When used as a treatment, bromine has several advantages over chlorine. When bromine is added to the water of your hot tub it forms the oxidizer and sanitizer known as hypobromus acid. This is a weak acid that will not irritate the skin, lungs, eyes, or nostrils.

While spas equipped with an ozonator can reduce the amount of sanitizing agent needing to be applied, they still require some kind of longer lasting chemical agent in order to be truly effective in reducing microbial contamination.