3 in 1 tablet with chlorine, algicide & clarifier. Relax Multipool Tablet Large 200g tablets. Do not place tablets direct on pool surface or in still areas of water. Zone D - HS, IV41-49, IV50, IV55&56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE, Isle of Man & Channel Islands.
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