AQUAEL Oxypro 150 is a small, powerful membrane pump with a special design. The pump is double encapsulated and therefore extremely silent. The effect was achieved by a special construction of the electromagnet as well as double casing walls. All vibrations are damped by the body, which consists of a few independent, precisely connected elements. They dampen not only noise but also movement. The pump does not move. AQUAEL Oxypro 250 is very well suited for the operation of air stones, sponge filters, gravel filters or small skimmers.AQUAEL Oxypro 150+ pump output 150 l/h+ for aquariums from 20-150 L+ pump output adjustable+ double encapsulated, very quiet+ modern design with transparent housing+ LED indicator+ energy saving+ power consumption: 230V/50 Hz, 2 W+ Dimensions: 15.6 x 8 x 8 cm+ Connection for air hose 4/6+ Check valve included