SODIAL(R) 1.7M/5.5ft Fish Bowl/ Fish Tank /Aquarium Water Gravel Vacuum Cleaner Cleaning Syphon Pump How do you get water out of the aquarium? - with our clever cleaner pump. This powerful cleaner pump is simple for everyone to use, you do not need super human strength or four arms to get it working! Instructions for use: Changing the water that came with the suction pipe immersed in a fish tank 4-5 inch up and down shaking the water several times until the tank is automatically discharged. Total length: 1.7 m approx There is a stopper to protect fishes/plants from being sucked into the vacuum