Some of the various as-needed chemicals consist of:

• Algistats
• Algaecides
• Water Clarifiers
• Enzyme Cleaners
• Metal Sequestering Agents
• Defoamer
• Filter Cleaners
• Tile and Vinyl Cleaners

"AS-NEEDED" CHEMICALS: In certain situations and in certain regions, additional chemicals may need to be added to the pool water. These chemicals are not part of the normal chemical tests and adjustments that take place during the course of routine pool maintenance. Rather, these chemicals are called "as-needed" chemicals, as they are only added when they are needed.