The manufacturer informs:

Surface aspirator for external and backpack filters. Excellent for removing oily patina and surface bacterial film in fresh and marine aquaria.

CHARACTERISTICS:

• Increases the amount of oxygen in fresh/marine water
• Lighting benefits from constant surface cleaning
• Excellent movement ratio between surface and deep water
• The floating skimmer basket automatically adjusts to the water level
• Ideal for all aquaria from 25 cm in height
• Can be connected to all external filters with tube diameter 9/12 or 16/22
• Suction also from the bottom of the skimmer through a grille

Also included in the package are 2 suction cups with clips to adhere the skimmer to the aquarium wall.