Aquascape EcoBlast eliminates unsightly algae and debris from waterfalls, fountains, streams, and rocks on contact. Simply sprinkle the treatment directed on the affected area and watch the algae disappear. Quickly removing this algae growth will allow you to spend more time enjoying your water feature and less time maintaining it. EcoBlast can be used at any water temperature, making it an excellent choice for any time of year. EcoBlast can also be used with a wide range of pH levels. The 38.4-ounce container will treat up to 780 square feet of surface. Aquascape is passionate about the products we produce, providing unique products, designs, and features that stand above the competition.