Aquarium Cleaner 2-in-1 Multifunctional Cleaning Kit - Gravel Cleaner is perfect for water changing and sand washing. The aquarium pump nozzle net prevents the absorption of juvenile fish, plants, and gravel. Compact structure of the aquarium cleaner - Equipped with a freshwater hose (183 cm) and 2 hard water pipes (28 cm x 2). The gravel cleaner's connection is tight, minimizing the risk of water spillage. Aquarium filter check valve design. Note: Since the pump is a one-way pump, place one end of the hose at the water outlet. Aquarium water changer pump is easy to grip; simply press the pump several times and the water flow starts automatically. High-quality PVC hose resists kinking and maintains steady water flow. The hose can be bent into any position for convenient use. (Note: The water outlet must be positioned lower than the inlet.) The aquarium gravel cleaner can be disassembled into separate parts for easy adjustment based on your needs. It can also be secured to the aquarium to free your hands, making it ideal for daily maintenance and routine water changes.