Aquascape Clean for Ponds XT makes it easy to quickly optimize the quality and clarity of pond water while drastically reducing filter maintenance, keeping ponds clean, clear, and beautiful. Clean for Ponds XT uses a powerful blend of heterotrophic bacteria to naturally digest organic waste or sludge caused by uneaten fish food, fish waste, and decomposing leaves and debris. The high concentration of bacteria will work to clean between rocks and gravel while keeping pond filters clean, including filter mats and biological filter media. Clean for Ponds XT is safe for fish, plants, pets, and wildlife. Available in either 2L bottles for combining with other treatments in the XT doser, or 3.8L for using in isolation. Also available in 3X concentrated form.