Which chemical is commonly dispensed by chemical feeders?

The correct choice is that both chlorine and algaecide are commonly dispensed by chemical feeders. Chemical feeders are devices used in pool maintenance to automatically dispense a controlled amount of chemicals into the pool water to maintain safe and balanced water conditions. Chlorine is the primary disinfectant used in pools to eliminate bacteria, viruses, and other pathogens, ensuring the water remains safe for swimmers.

Algaecide is also an essential chemical used to prevent and control algae growth, which can be harmful and unsightly in pool water. Using a chemical feeder allows for precise and consistent dosing of both chlorine and algaecide, making pool maintenance more efficient and effective. The ability to manage both types of chemicals with a single device underscores the importance of maintaining water quality through a comprehensive approach that includes disinfection and algae prevention.