Algae Shield

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Brand: Earth Science LaboratoriesFeatures: Effectively Kills & Prevents Algae Compatible with chlorine, bromine, ozone, ultraviolet and salt systems. Not compatible with biguande s ystems. 1 ounce per 1,000 gallons of pool water, every 30 days. Details: AlgaeShield is treatment and prevention. It kills existing algae and defends your pool against algae for up to 30 days. Use AlgaeShield each month for a summer of clean, crystal clear water. Close your pool with AlgaeShield for an easier spring opening.Package Dimensions: 9.3 x 3.7 x 2.6 inches Show more