Extremely quiet and adjustable output. Fully equipped with air hose, diffuser and suction cups. Eheim 200L/H Air Pump is equipped with an eye for wall fastening and can also be safely mounted on the vibration resisting rubber edges in a traditional manner. The airflow can be regulated at each outlet on the pump and also on each diffuser. This allows you to set your own individual bubble effect. Vibration dampening rubber edgings contribute to the pump's quiet operation. The air pump stays still and doesn't move or topple over. The air pump can sit horizontally or vertically by using a hook.