The Rizopets BLH-401 Hang on Filter is an essential piece of equipment for maintaining a healthy and crystal-clear aquarium environment. This efficient aquarium filter features an advanced air-compressing system that ensures optimal water circulation and oxygenation for your aquatic pets. With a powerful 4W motor and a maximum output of 250 litres per hour, this hang-on filter effectively removes debris, waste, and impurities from your tank water. The innovative damping system operates at extremely low noise levels, creating a peaceful atmosphere for both you and your fish. The multi-level pre-filter system provides thorough mechanical and biological filtration, promoting beneficial bacteria growth whilst trapping particles of various sizes. Its convenient hang-on design makes installation and maintenance straightforward, simply attaching to the side of your aquarium without taking up valuable internal space. Suitable for small to medium-sized tanks, this filter combines reliability with performance to keep your underwater world thriving.