Pool Stabilizer (Cyanuric Acid) 50 lb Drum | CYA Conditioner | TropiClear

Cyanuric acid (CYA) is the "sunscreen for your chlorine." Without it, the sun will burn off your free chlorine in hours. This 50 lb drum is the best value for raising stabilizer levels — especially after a drain and refill or at season start. 50 lb drum of granular cyanuric acid Protects free chlorine from UV degradation Ideal range: 30–50 PPM (up to 70 PPM for salt pools) Dissolves slowly — add via skimmer basket sock method ⚡ Pro Tip from Our Techs: Never dump stabilizer directly into the pool — it sinks and takes forever to dissolve. Put it in a sock or mesh bag and hang it in front of a return jet. Dissolves fully in 24–48 hours. CYA doesn't break down on its own — the only way to lower it is dilution (drain and refill). Add gradually and test between additions.