Various Cleaning Modes: Multifunctional vacuum aquarium cleaner tool with powerful siphon pump to siphon water changes, remove algae and clean gravel. Freely adjust different lengths: Comes with two sizes of telescopic suction hoses, works for large and small aquariums. Gravel vacuum installed, please keep the water level between the MAX (80cm) and MIN (11cm), then start the switch. Aquarium cleaning function: electric aquarium siphon cleaner for cleaning gravel, washing sand, effectively siphoning fish droppings and other dirt without the need for water changes . Come with a gravel and sand filter mesh bag, fully repeated for durable use. Free your hands: battery box on the top, electric operation with only 2 alkaline type C batteries (packaging not included). Before using the two batteries of the 2nd, in the battery, stay for 3-5 seconds, then use. Please do not use it continuously for more than 30min to 1h. Installation is simple: all components can be disassembled and placed,
