EasyPro Liquid Rock & Waterfall Cleaner is one of the most concentrated water conditioners on the market today. Commercial strength oxy-based cleaning. Quickly and effectively clean rocks, waterfalls, water features, fountains, statues, plant pots, etc. Lifts debris to pond surface where it can be removed by net or skimmer. Simply pour into area with most active water movement for best mixing. Safe for use with fish, birds, pets and wildlife.