2kg RELAX Non Chlorine Shock Granules for swimming pools, spas and hot tubs are ideal for regular oxidisation of water. These are suitable for spas running on chlorine or bromine. Non chlorine shock restores sparkle and oxidises the water. A genuine RELAX branded product, Grade A Non Chlorine Shock for use in spas and pools, top quality. These Non Chlorine Shock granules are rapid dissolving and have minimal impact on pH. Keep PH levels between 7.2 and 7.6 and Chlorine Levels in a pool between 1-3 parts per million and hot tub 3-5 parts per million.
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