Clearwater 1 kg Multifunction Chlorine Tablets, 4-in-1 Dispenser Tablets (Sanitiser, Stabiliser, Algaecide and Clarifier) for Pools and Hot Tubs, 50 x 20 g, White. EASY TO USE: by placing the tablets in a floating dispenser or chlorine feeder (such as ChemConnect) for slow release rather than being applied directly to water.
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