Practical Aqua Della cleaner for cleaning the aquarium bottom and changing the water. With suction bulb so that suction through the mouth is not necessary. The cleaner can be adjusted to the height of the aquarium and is equipped with a locking clamp to briefly interrupt the water change. Easy to attach to the window by means of a suction cup. Features: Practical suction bulb. No need to suction through the mouth. adjustable dirt timer Shut-off valve Easy attachment