Chlorine Tablets for Swimming Pool/Hot Tub: 100g chlorine tablets and dispenser. Ideal for floating dispensers for swimming pool or spa. 5 Inch Chlorine Floating Dispenser: Chlorine Dispenser designed a lockable lid and adjustable control ring, providing a safer and more enjoyable swimming pool experience. Easy to Use: Open the screw cap of Chlorine Dispenser, put the chlorine tablets into chlorine tablet dispenser,adjust the bottom slats,and then you can put pool cleaner in your spa/hot tub. Application: Suitable for drinking water, aquariums, swimming pools and spas, industrial water, ponds and hot springs. Use criteria: 7 chlorine tablets per 2500 gallons of water per week. You can increase the quantity depending on the quality of the water. Packaged Included: 5 inch Dispenser and 100g pool cleaning tablets.