Adjustable Dosage Ring - You can adjust the dosage of the Floating Dispenser using the blue ring. The right amount of chlorine to release over time, evenly distributed! High Quality - Our Chlorine Diffuser is made of sturdy, durable PP material, it is filled with foam, which is guaranteed to float year after year, you can use it in any season. Safety - The secure lock cap can prevent children from opening, giving you a safer and more enjoyable swimming pool experience. Widely Used - Our Pool Floating Diffuser is suitable for hot tubs, large and small swimming pools, spa pool, water park, fountains and aquariums. Excellent Customer Service - We strive to provide the best customer service, if you are unhappy with our floating chlorine dispensers or have any problems, please contact us at any time and we will provide you with a satisfactory result. Pool Chlorine Dispenser - Never worry about the chlorine level in your pool again! Features: -There is enough space in the Pool Chlorine