HTH Pool Care Granule Shock Treatment 12 lb Cup Cap Milky Way wall art –

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HTH Pool Care Granule Shock Treatment 12 lb Cup Cap Milky Way wall art –About This Item HTH Shock Advanced is the powerful 4 in 1 formula with Cal Hypo that kills and prevents bacteria and algae as well as reduces chlorine odor and irritation for crystal clear healthy water. Traditional chlorine products contain cyanuric acid CYA. When too much CYA builds up it can cause overstabilization or chlorine lock and cloud your water. The fast acting fast dissolving Cal Hypo formula in HTH Shock Advanced provides chlorination