Regular use of Pro-Kleen's Hot Tub, Spa & Whirlpool Cleaner will prolong the life of your hot tub, spa or whirlpool. Only 500ml is required per use. Remove any loose debris from the filter body. Add 500ml of solution to a container with 10L of warm water, soak the filter in the solution overnight and rinse off in the morning before using it again.
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