Half Off Ponds Rock Scrubber — 25 lb Pond Cleaner

Concentrated formula designed to break down debris that accumulates on rocks and other submerged surfaces. Controls and helps prevent a broad spectrum of debris in water gardens, waterfalls, fountains and standing water. Utilizes a powerful oxidation reaction that is fast-acting and effective, with noticeable results in as little as 48 hours. Because it is concentrated, it reduces the need for extra cleaning and additional treatments. Safe for fish and aquatic plants.