Calcium Hypochlorite 

Granular Shock Chlorine is a highly concentrated chlorine used to shock your swimming pool water on a regular basis, usually this should be done every 2 weeks or more frequently during hot weather, or if your pool water has turned green.  Granular Shock Chlorine is very effective at restoring sparkling water from algae infestation.  Granular Shock Chlorine can be added through the skimmer.  Also use this product if the pool has been neglected or algae growth has appeared on the floors and walls of the pool, or there has been an exceptionally high bather load.

Equivalent to Shock Xtra,  Rapid Shock

This is a 2kg tub.

CHIP information can be found located under Product main picture, Click to enlarge.

*Product packaging may differ from picture shown