Oase PondoVac 3 Pond Vacuum
 
Effectively removes silt and sludge from ponds up to 2.1m in depth using a powerful 1600w motor. Its patented dual-chamber system enables continuous suction without interruptions and has a maximum flow rate of 4,000 litres per hour. Comes complete with 4m suction hose and 2.5m discharge hose.