Aquarium Air Stone Pipe Tubing Suction Cup Fish Tank Vacuum Siphon Hand Pump Removes fish and waste from the bottom of your aquarium whilst making your water change easier removeable gravel guard Water is drawn through the pipe with the hand pump mechanism(no need to suck on tube)! Non-return valve fitted Excellent helper to change water & clean the gravel Easy to use. Just press on the pump and water will flow from the tank into a bucket. Made of durable plastic