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.
Max Water Depth: 72cm
With adjustable structure, it is suitable for small and large aquariums.