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Di-Chlor Chlorine Shock with 56% available chlorine kills algae and will rid your pool of unsightly algae spots.
Ideal for use in vinyl lined, fiberglass or colored plaster surface pools. 2 Boxes of 12 - 1 lb bags, 24 lbs total.
Recommended superchlorination dosage: 1 lb or 1 bag/10,000 gal.