What are the two main types of pool water sanitizers?

The correct answer highlights chlorine and bromine as the two main types of pool water sanitizers because they are the most commonly used chemicals for disinfecting pool water. Chlorine is widely popular due to its effectiveness in killing bacteria, viruses, and controlling algae. It comes in various forms, such as liquid, granules, and tablets, making it versatile for different pool settings and preferences.

Bromine, while less commonly used than chlorine, is another effective sanitizer, particularly favored for indoor pools and hot tubs. It remains stable at higher temperatures and has less odor compared to chlorine, making it a suitable alternative in certain environments.

In contrast, options incorporating ozone and ultraviolet light refer to alternative sanitation methods that can be effective in disinfection but are typically used in conjunction with traditional chemical sanitizers rather than as standalone solutions. Ozone is a powerful oxidizer that can help reduce the need for chemicals, while ultraviolet light helps to inactivate microorganisms but does not provide residual sanitation in the water.