Unbranded 1 Qt. Pool Ultimate Algae Guard

HTH Ultimate Algae Guard is the strongest algaecide formula available from the brand pool owners have trusted for over 25-years. Ultimate Algae Guard both kills and prevents even the most stubborn green, black and mustard algae. This non-foaming algae guard treats pool water for up to 90-days after applying to your pool – and you can swim just 15-minutes after use.Kills and prevents all algae types including green, black and mustard algaeOur strongest, fast-acting formulaNon-foaming algaecide for your swimming poolLasts longer – treats pool water up to 90-daysSwim 15-minutes after applying algaecide to your pool