feature:1. Reduce the dosage of algaecide and flocculant.2. Prevents chlorine loss from direct sunlight while stabilizing chlorine, reducing the amount of chemicals you need to add. Use 7 tablets per 2,500 gallons of water per week for crystal clear pool water!3. Pool effervescent tablets help prevent algae and increase water clarity.4. Environmental protection. No harm to the environment and aquatic life, safe to use.Specification:Type: Pool Cleaning TabletsWeight: 100 gramsMaterial: TabletWhiteDimensions (LxWxH): about 9.6*3cmQuantity: 100 pcs/bottleThe package includes:1 bottle * swimming pool effervescent tablet / 1 bottle * swimming pool effervescent tablet + 1 * applicatornotes:1. Due to light and screen differences, the color of the product may be slightly different from the picture.2. Please allow 1-2cm difference due to manual measurement.

Thank you for your attention, There are so many useful and cheap item in our store. we will be ready to reply you ASAP.