CrystalClear® Ultimate Chlorine Shock Granules 5kg Premium Brand - CrystalClear® - Chlorine Shock Granules. CrystalClear Ultimate Chlorine Shock Chlorine, are a calcium hypochlorite granular shock chlorine treatment that can be used for regular shock dosing of your outdoor pool or hot tub. CrystalClear Granular Shock Chlorine is a highly concentrated chlorine with a minimum of 70% Cl active that is used to shock your swimming pool or hot tub water on a regular basis. This should be done every few weeks or more frequently during hot weather or if the water in your pool or hot tub turns green or looks like an algae infestation is taking hold of the pool or tub water. Same day dispatch if ordered before 2pm Next working day delivery.
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