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Follow the ordered sequence listed below when adding any chemicals to your swimming pool. Always read and also very carefully follow item label instructions. With the pool pump working on high speed, include items straight to swimming pool water, unless the label defines otherwise. Never ever blend chemicals-- permit Click for source at least 4 hrs after application before including other chemicals, or longer if the product tag suggests even more time is required. The label should additionally suggest the waiting time till the water is safe for swimming.