Nicrew Electric Fish Tank Aquario Cleaning Tools Electric Gravel Cleaner Filter Siphon Vacuum Water Change Washer Pump Aquarium Note: Ensure to reach the lowest water level when start working, after the power is on, the water level does not have to reach the lowest water level. Brief Description : Perfect gravel cleaner for fish tank or aquarium to clean gravel, siphon the fish excreta and other dirt out effectively without requiring a water change. Powered by two batteries, safe to use. Features: Easy to install and operate. Press the on/off button on the top, the water in aquarium will be pumped out automatically through a hose for changing water. Also can clean gravel, siphon the fish excreta and other dirt out effectively without requiring a water change. The upgrade outlet water head and scraper are convenient to clean the dirt in the corner and on the wall. Powered by two batteries, safe to use. Another power on/off button to control external power supply(not included). With adjustable structure, it is suitable for small and large aquariums. Specifications: Power Requirement: 2 x Battery (not included). Material: ABS Plastic and Electronic Components. Length: 58-94cm(adjustable) Maximum flow: 520L/h Maximum length: 94cm Normal water level: 30cm Maximum water level: 72cm Color: Beige gray Net Weight: 263g Package included: 1X Aquarium Gravel Fish Tank Vacuum Syphon Cleaner Pump FREE SHIPPING IS INCLUDED!