Microbe-Lift Sludge Away 5 gallon tote Speeds Up the Removal of Pond Sludge & Muck Naturally Especially Helpful for Ponds That Have a Rock or Gravel Bottom & Where Vacuuming is Impractical Sludge-Away works faster at warm water temperatures, however, it may be used effectively at any temperature year-round Organic and microbial based Safe for fish, plants, pets and the environment Helps improve pond clarity 100% active ingredients Disperses quickly