Draining and refilling your pool is a vital part of long-term pool maintenance that helps protect your investment and keep your water clean, safe, and inviting.

CYA, or cyanuric acid, is a stabilizer or conditioner for chlorine. It acts like sunscreen for your chlorine, protecting it from being broken down too quickly by the sun’s UV rays. Without it, chlorine can dissipate in a matter of hours—leaving your pool vulnerable to contamination.