GreenStoryGlobal Cyanuric Acid (CYA) Remover for Pool and Spa Skimmer Basket - 1 lb

This CYA Remover works as a drop-in filter that fits in any skimmer basket. There’s no need to drain the pool, significantly conserving water. It works at any temperature and does not affect water chemistry. Simply toss the bag in the garbage when you reach the desired CYA level.