HTH 1 Lb. Ultimate 7-in-1 Shock Granule
$8.99
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7-in-1 multi-functional shock treatment, kills bacteria & algae, crystal clear results in 24 hours Prevents scale formation, softens water, provides filter aid Contains built-in clarifier, turns blue to show it's working, fast dissolving 1 bag treats up to 13,500 gallons
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