【Efficient Gravel Cleaning】：This aquarium vacuum gravel cleaner quickly removes debris, fish waste, and excess food from the substrate, keeping your fish tank clean and healthy without disturbing the water balance 【Battery Powered Operation】：Equipped with a battery-powered motor, this fish tank vacuum provides strong suction for effortless cleaning and water changing, eliminating the need for manual siphoning or complicated setups, Max Water Flow: 130GPH/520LPH 【Multi-Functional Design】：Functions as a gravel cleaner, water changer, and sand washer in one tool, making it an all-in-one fish tank cleaning solution for aquarium owners who want efficiency and convenience, The adjustable length of this water changer is 21.6-31.5 inch, suitable for aquariums of various sizes 【Easy to Use & Removable】：The removable vacuum tube ensures easy cleaning and maintenance. Simply assemble, power on, and start washing sand or changing water, making aquarium care hassle-free for beginners and experts 【For Freshwater & Saltwater】：Suitable for both freshwater and saltwater aquariums, this versatile fish tank vacuum cleaner works perfectly in different tank sizes, ensuring a clean and safe environment for your fish. If you have any issues, please feel free to contact us at any time, and our after-sales service team will resolve your concerns within 24 hours VILLNO Aquarium Vacuum Gravel Cleaner, Battery Fish Tank Water Changer, Removable Vacuum Sand Washer for Fish Tank Cleaning Water Changing Sand Washing, Suitable for Freshwater and Seawater: The VILLNO aquarium vacuum gravel cleaner makes water changing and tank cleaning simple. Powered by battery, it removes debris, washes sand, and helps maintain clear water. With a removable design, it is easy to use, suitable for freshwater and saltwater tanks, keeping your aquarium clean and healthy.