Formula 6000 Pool and Spa Poly Algaecide is effective at controlling the growth of algae in swimming pools, exterior spas, whirlpools, hot tubs, decorative fountains and ponds that do not contain fish or other wildlife.
For pools showing visible algae growth, add an initial dose of 11 to 17 fluid oz. per 10,000 gallons of water. For treatment of freshly cleaned and filled pools, add six 10 100 fluid oz. per 10,000 gallons.
For continuous protection, add two to four fluid oz. per 10,000 gallons of water every five to seven days after initial treatment. Formula 6000 also prevents the growth of most algae during off-season winter months for easier, quicker spring openings.