BioGuard Algae Complete Dual-Action Algaecide

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Prevents and eliminates green, mustard, and black algae with a powerful dual-action formula combining quaternary ammonium compounds and copper. This non-foaming liquid algaecide wo rks in all pool types including saltwater systems. Key Features Dual-action formula with 6.50% poly quaternary ammonium and 3.3% metallic copper Non-foaming and non-staining liquid concentrate Compatible with chlorine, bromine, and saltwater sanitizing systems For prevention, add 8 fl oz per 10,000 gallons initially, then 1.5 fl oz weekly. Double the initial dose (16 fl oz per 10,000 gallons) when treating visible algae blooms. Show more