In The Swim Quick Clear Green - Turn Your Pool Water from Green and Cloudy to Sparkling Blue - 4 PoundBrand: In The Swim Color: clear Features: Fast Results: Quick Clear Green pairs with chlorine shock to tackle dirty water and deliver visibly cleaner water, often overnight. Effective Pairing: For results, you must add 2 lbs. of chlorine shock along the pool perimeter every 12 hours over a 36 hour periodthree total applications. No Brushing Needed: Removes non living matter without the hassle of scrubbing pool surfaces CYA Resistant Formula: Remains