CrystalClear ClarityMax multi-purpose cleaning action cleans ponds with an unprecedented combination of activated barley, natural bacteria, enzymes and a powerful secret ingredient. These ingredients work in tandem to clean, polish and break down dead organic debris on and around waterfalls, streams, plant pots and filtration systems. CrystalClear ClarityMax also maintains crystal clear water for the long term. Use when water temperatures are above 50 degrees F. 1 ounce treats 500 gallons. For persistent pond problems apply ClarityMax up to every 3 days at the prescribed rate until the problem is corrected. Then return to normal weekly application rate.