Preve-Shock Plus

PoolRunner Direct Verified independent store

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How to Use Preve-Shock Plus: Test and balance pool water (pH 7.2–7.6). With pump running, broadcast 1 lb per 10,000 gallons directly into the deep end. Brush pool floor immediately after adding. Run filter for at least 4–8 hours. Retest chlorine before swimming. Safe for vinyl liner pools. Do not mix with other chemicals. Wait until chlorine drops to 2–4 ppm before swimming. Store in a cool, dry place. Show more