Hydor Ario 1 Submersible Air Pump Fine sponge: new improved fine sponge helps prevent sand and small gravel from clogging the impeller chamber.New positioning base: fits all 4 models, especially designed so electric cord does not twist. 4 suction cups allow free positioning even on aquarium sides.Sand saver disk: new sand saver disk helps prevent sand, gravel or small stones from being sucked in the impeller chamber. No noise: incredible absence of vibrations. Small: reduced size, fits anywhere. Easy to hide: positioned under-gravel Ario virtually disappears. Simple maintenance: easy to disassemble, clean and reassemble. Reliable, long lasting: non perishable components (membranes), for fresh water and marine aquariums. Air flow control: airflow is adjustable from outside the aquarium.
