Check the listing for details. Multifunctional Instant Cleaning Pool Bath Pool Effervescent Tablets. Condition: New. Listed at 10.99 USD. Place these tablets for small swimming pools as needed according to instruction of 1 piece for a 10000 gallons pool to keep the water freshes. These chlorine tabs are slow dissolving, last up to a week. Use in Feeder, or Skimmer basket, then put into the pool every week or as often as needed 1 tabs for 10,000 gallons of water. These chlorine tabs can be used to swimming pools, hot tubs and spas and other place that need chlorine such as sink, toilet, etc. Our Chlorine Tabs can Prevents corrosion, scale and Specifications: Material: Plastic Size: approx.4.7x9cm/1.85x3.54in Color: Shown in pictures. Net Weight: 100g Shelf life: 3 years Quantity: 1 BottlePlace these tablets for small swimming pools as needed according to instruction of 1 piece for a 10000 gallons pool to keep the water freshes. These chlorine tabs are slow dissolving, last up to a week. Use in Feeder, or Skimmer basket, then put into the pool every week or as often as needed 1 tabs for 10,000 gallons of water. These chlorine tabs can be used to swimming pools, hot tubs and spas and other place that need chlorine such as sink, toilet, etc. Our Chlorine Tabs can Prevents corrosion, scale and Specifications: Material: Plastic Size: approx.4.7x9cm/1.85x3.54in Color: Shown in pictures. Net Weight: 100g Shelf life: 3 years Quantity: 1 Bottle