The popular electroair air pumps are highly reliable and very quiet in use'. '.strtoupper('t')he sheer weight of the aluminium casing lets you know these are quality items'. '.strtoupper('t')he weight means additional ballast is provided which reduces vibration noise when in use.air pumps are essential for the health of your fish especially in the summer when oxygen levels are depleted'. '.strtoupper('a')dditional air also leads to additional water circulation and a healthier pond'. '.strtoupper('t')his 'artificial lung' will ensure your pond remains healthy 24 7.the pondxpert electroair 2700 is perfectly suited for the following ponds br • no fish 19,830 litres 4,360 gallons br • fish 15,450 litres 3,400 gallons br • koi 7,735 litres 1,700 gallonsaccessories included with the electroair pumps br • 1 x rubber elbow which connects to the air pump br • 1 x 8 way manifoldhigh grade casing the electroair range are made of a high grade aluminium alloy casing, which includes a double damping system and noise absorbing function which reduce the noise and vibrations of the pump'. '.strtoupper('t')hese air pumps also come with a lubricated design to keep air under pressure and a unique design for quick heat dissipation!double air chambers the design of the electroair pumps allow them to produce a large quantity of air with strong air pressure.air pump foam included the electroair pumps include a filter sponge on top of the unit that will prevent debris from entering the pump'. '.strtoupper('e')xcellent for reducing maintenance!ip44 rated these pumps are weatherproof which means they can be situated close to the pond'. '.strtoupper('t')hey are designed to work outdoors 24 7 in all weathers.