AQQA Upgraded DC 18W Electric Aquarium Vacuum Gravel Cleaner, Anti-Clog Pre-Filter Design, 7-in-1 Multifunctional Fish Tank Cleaning Kit for Dirt Removal, Water Change, Sand Washing, Turtle ShowerBrand: AQQA Color: Black Features: Upgraded Anti Clog Design This aquarium gravel cleaner adopts a water separated motor design that keeps debris away from the motor for smooth, clog resistant operation. Unlike traditional aquarium vacuum cleaners, the motor doesn't need to be fully submerged, works without water level limits, and avoids bulky external pumps, making it perfect even for shallow, small, and narrow aquariums. Adjustable Power & Waterflow