Pro-Kleen Hot Tub, Spa and Pool Filter Cleaner 5 Litre. Pro-Kleen Filter Cleaner 5 Litre over night soak. Pro-Kleen Instant Filter Cleaner 1 Litre. Pro-Kleen's Hot Tub, Pool & Spa Filter Cleaner is highly effective inremoving oils, grease and minerals - all ofwhich hinder filter performance.
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