EASY TO USE Just press switch, it can be moved freely, and the excrement of the fish and the dirt in the fish tank can be easily taken away. HIGH SAFETY PERFORMANCE The electric water changer only needs two AA batteries (not included）to avoid the danger of . Can be used as a water changer to pump water out of the shallow and deep fish tank or aquarium. TELESCOPIC STRUCTURE The use of telescopic structure to ensure the universal use of large and small fish tanks. CLEANING FUNCTION Can clean gravel, siphon the fish excreta and other dirt out effectively without requiring a water change. Item Type: Electric Fish Tank Vacuum Cleaner Material: Plastic Product Use: Fish Tank Cleaning Battery: 2 x C Batteries (Not Included) Normal Water Level Height: Approx. 400mm / 15.7in Maximum Water Level Height: Approx. 520mm / 20.5in Flowing Rate: 520L/h1 x Handle 1 x Siphon 1 x Filter Bag 1 x Sand Washing Cup(2 x Including Telescopic Tube) 1 x Telescopic Tube When using this pump, the water level must