Easily remove dirt and old water while leaving gravel intact

Simply press the starter pump on the grip a few times to start draining, making it possible to perform water changes that are gentle on ornamental fish and aquatic plants without disrupting the layout of the aquarium. It is also possible to adjust the drainage speed according to the tank size and gravel type. Just insert the pipe into the bottom sand and the waste in the gravel will be drained out along with the old breeding water.