Easy water change: The fish tank cleaning kit allows for easy water change without getting your hands wet, and comes equipped with a sturdy and thick air bag with a one-way valve. Simply connect the necessary accessories and tubes, ensure they are securely connected, and then press the air bag a few times to easily pump out the water. Protecting fish and invertebrates: The python water changer is designed with an additional filter to protect your aquatic life and prevent small fish, shrimp, and other invertebrates from being accidentally inhaled during the cleaning process Always use, keep the aquarium clean: The filter grid in the aquarium gravel cleaner kit can clean the gravel in the aquarium and absorb the accumulated food, fish waste, and toxins in the tank; The duckbill suction head can clean the algae adhering to the aquarium tank wall and also suck them away. Great value for money: Many fish accessories are priced too high. This simple and sturdy product comes with a variety of accessories, suitable for various aquarium environments, and can perform the work of more expensive siphons at a low cost. The fish tank vacuum gravel cleaner is suitable for medium to large-sized fish tanks, such as those with a capacity of 5 gallons, 8 gallons, or 10 gallons. The water change time may be longer for larger fish tanks. Service : If you have any questions about the product, please send us an email to communicate with us! Your pleasant shopping experience is of great significance to us.