The Oase Pond Swimskim Start, skims suspended matter from the surface of a garden pond, powerfully and effectively. Ideal for skimming leaves off the pond during autumn and prevents the warmer water at the base of the pond from being disturbed in the winter. The OASE Skimmer features a fixed foot which is designed to hold pebbles, allowing it to be naturally integrated into the garden pond. A telescopic column enables easy adjustment of the height. The top float section self levels with up to 160mm difference in water level. The skimmer works efficiently at flow rates of 4000lph (880gph) to 16000lph (3500gph). It can be easily used in conjunction with the Aquamax Eco pumps. Supplied with a 3 year guarantee which can be extended to 5 years at no extra cost by sending off the guarantee card to Oase. Pond Depth: Min - 300mm . Max - 800mm. Base Diameter: 350mm, Hosetail takes 25, 32 and 38mm hose.