Granular Shock Chlorine Blue Horizons Hot Tubs Spa Swimming Pool Oxidiser 5kg
5KG Blue Horizon Chlorine Shock Granules for Swimming Pools & Hot Tub Spas. Maintain free chlorine level within the ideal range of 1 – 3mg/l. Pre-dissolve this product in a clean contain at a maximum rate of 100g per 10ltrs of clean warm water.