What causes low bromide in pool?

* Evaporation: Bromide is a volatile chemical, which means that it can evaporate from pool water when the air is hot and dry. This is especially true if the pool is not covered.

* Dilution: If you have recently added fresh water to your pool, it may have diluted the bromide concentration.

* Chemical reactions: Bromide can react with other chemicals in pool water, such as chlorine, and be converted into other compounds. This can happen if the pool water is not properly balanced.

* Biological degradation: Bromide can also be broken down by bacteria and other microorganisms in pool water. This is why it is important to keep the pool water clean and properly sanitized.

If you find that your bromide levels are low, you can add bromide tablets or granules to the pool water. Be sure to follow the directions on the product label to add the correct amount of bromide.