Features: Helps prevent algae and increases water clarity. Provides a constant chlorine dose. Reduce the amount of algaecide and flocculant used. Contains cyanuric acid (stabilizer) so it will not be broken down by sunlight. Moves floating dispenser in 10 pieces of water per 4,500 gallons (1,000 liters). If you have an underground pool, put the tablet in the basket, it will easily melt faster in the water. NOTE: When using the pool, the floating water dispenser should come out of the pool. Do not put the plate directly into the sink, otherwise it will damage the inner pot. Specification: Quantity: 50 pieces/100 pieces/200 pieces optional How to use: Each 10 capsules contains 1000 kg of water, can be used directly with a watering can.