Chemical: Sodium Dichloroisocyanurate Function: A granular form of chlorine sanitiser for pools and spas. Also used as a shock treatment on small above ground pools.
Dosing Rates Pool (Regular Dose): 100 grams increases the chlorine level by 1ppm in a 10,000 gallon pool. Pool (Shock Dose): Add 750 grams per 10,000 gallons of pool water. This might need to be doubled or even trebled depending on how much algae is present. Spa: 5 grams (a teaspoon) increases the chlorine level by 2.5ppm in a 1,000 litre spa.
Health and Safety guidelines and Dosing Information for Stabilised Chlorine Granules can be found in our Information section on the left hand side or by clicking on the product name below.
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Pool Chemicals 
