EasyPro Liquid Rock and Waterfall Cleaner 32oz
Application: Apply 1oz per 300 gallons of water once a week. Apply directly to pond or alternatively mix in a bucket of pond water and evenly spread around pond or fountain. For best results apply in the morning under sunny, calm, conditions. Debris can be removed from pond by skimmer or net. Application can be repeated every 3 days until desired results are achieved. Use when pH is between 7.0 to 8.0.