High Performance Chlorine Tablets 20g, Use the mini chlorine tablets to control bacteria and algae in your pool or spa. These high performance chlorine tablets can be placed in your skimmer or Floating Dispenser. Never place directly into your spa or pool as severe Bleaching/Staining may occur. Private Pools will require approximately 1 tablet per 50m3 (10,000 Gallons) per week. Comes in a 5 kg pack. FAQ's regarding this product. How many tablets do i put in my dispenser ? - The dispenser has a full capacity of about 7 small 20g tablets however we recommend keeping the dispenser topped up with with 3 or 4 tablets. Are these better than granules ? - It is an easier way to keep a pool/spa chlorinated however it is less accurate than manually putting in granules when required.