Fangrui Product Details Professional Chlorination Tabletsour Hot Tub Chlorine Tablets Can Clean And Stabilize Your Water Quality, Remove Pool Stains. It Has A Purifying Effect, Inhibits Algae Growth, And Has An Advanced Clarifier Function That Absorbs Tiny Particles To Disinfect And Stabilize Your Water Quality, While Reducing Or Preventing Algae Growth, And Purifying Turbid Water Without Bleaching The Water Safe Formulapool Chlorine Tablets Are Made Of High-quality Materials, Safe, Healthy And Durable. No Need To Worry About The Chlorine Content In The Water. Our Multi-purpose Chlorine Tablets Are Suitable For All Water Conditions And Various Family Leisure Activities. Chlorine Tablets Are For Use When Swimming In Hot Tubs And Swimming Pools Or Taking A Hot Spring Bath Long-lasting And Effectivethese Pool Chlorine Dissolves Slowly And Is Effective For Up To 1 Week. The Long-lasting Properties Allow You To Minimize The Use Of Other Products, And The Pool Cleaning Tablets Can Keep The Pool Water Fresh For A Long Time Easy To Use Simply Place The Pool Cleaning Tablet Directly Into The Pool Or Bathtub To Effectively Clean The Water In The Pool, Sink, Toilet And Sink. You Can Place The Pool Chlorine Tablet Into The Pool Regularly As Needed To Keep The Water Clear. (note: To Avoid Direct Contact, It Is To Place The Pool Chlorine Tablet When No One Is In The Water.