Cleanliness is next to Cod-liness—keep your fishies' tank in great shape between washes with Eheim’s Quick Vac Automatic Gravel Cleaner & Sludge Extractor! This battery powered vacuum is perfect for scrubbing substrates clean with ease and precision between regular water changes. Its suction is engineered to get rid of dirt and particles that might otherwise accumulate in your tank and lead to murky water and potentially sick fish. Plus, this handy vac features a mesh filter that collects unwanted debris while allowing water to flow freely back into the aquarium. This is also great for use with Aquatic Turtles, Aquatic Amphibians, and Invertebrates.