Ornamental Fish Production and Management

4.2.7 Submersible air-lifting filter (inside filter / corner filter)

The submersible filter is rather compact. It is attached to the aquarium wall on the inside in a corner by means of a sucker. It works on the principle of bubble-air-lifting of filtered water, which is produced at the air stone fed by an aerator pump. A foam filter is used. Obviously, the filter combines filtration with aeration. Aeration takes place during the bubble-airlifting as well as the outlet where water is returned to the aquarium in the form of a spray.

Inside filter (a) position in the aquarium

Inside filter (b) filter assembly