AquaSparkle Spa Non Chlorine Shock is a granular product that is ideal for the regular oxidation of spa water as it will destroy organic waste and chloramines without increasing the chlorine level. These granules can be used for chlorine or bromine treated spas spa water to help achieve crystal clear water that looks great and is comfortable for bathers. A granular product that is ideal for regular oxidation of spa water. As it does not increase chlorine or bromine levels, bathing can resume shortly after application. Instructions - Maintain pH levels within the ideal range 7.27.6. If the level is not in this range, adjust. - Maintain free chlorine levels in spas of between 3-5mg/l (ppm).Maintain bromine levels in the range of 3 5mg/l (ppm). - Pre-dissolve this product in a clean plastic container at a maximum rate of 10g of product of 0.2 gallon (1ltr) in water. Stir well to ensure product is fully dissolved. Add the resulting solution to the spa whilst the pump (s) are turned on