How can you stabilize chlorine levels in pools that are exposed to sunlight?

Adding cyanuric acid to the pool is an effective method for stabilizing chlorine levels, particularly in outdoor pools that are exposed to sunlight. Chlorine can degrade quickly due to the ultraviolet (UV) rays from the sun, leading to a reduction in its effectiveness for sanitizing the water. Cyanuric acid acts as a stabilizer by forming a chemical bond with chlorine, which protects it from the UV rays. By maintaining an appropriate concentration of cyanuric acid in the pool, you can ensure that chlorine remains active longer, thus enhancing its ability to kill harmful bacteria and keep the water safe for swimming.

Using additional chlorine may temporarily raise chlorine levels but does not solve the fundamental problem of degradation due to sunlight. Covering the pool during the day can help reduce UV exposure but is not always practical for regular use. Adjusting pH levels, while important for overall water balance, does not directly affect the stability of chlorine against UV degradation. Therefore, the addition of cyanuric acid is the most effective approach in this context.