Desjoyaux Pools Shock Chlorine Granules Swimming Pool & Spa Price: £54.99 (as of 31/12/2023 10:44 PST- Details)

5KG CHLORINE SHOCK GRANULES: If your pool is green or going green, this will assist in bringing your water back to being crystal clear with it’s quick dissolving treatment process.
HIGH QUALITY TREATMENT GRANULES: Our premium grade, high concentration chlorine means that white lines aren’t left in your swimming pool unlike competitors cheaper alternatives.
FAST DISSOLVING: Designed in granules which dissolve much quicker than tablets, meaning chlorine is distributed within the pool water volume providing a shock treatment. Also effective for raising chlorine levels quickly when needed if the level is dropped below 1.5 to 3PPM (parts per million.)