Other Information : THIS AIR PUMP IS THE IDEAL ACCESSORY TO ADD TO YOUR TANK. IT IS QUIET AND POWERFUL AND HAS ONE SINGLE OUTLET WHICH IS ADJUSTABLE. THEY CONTAIN RUBBER FEET TO PREVENT VIBRATION AND HAVE A REPLACEABLE DIAPHRAGM. THEY COME PACKED IN A COLOURFUL ATTRACTIVE BOX AND ARE IDEAL FOR ALL AQUARIAS UPTO 70 LITRES.