The Aquaforte O Series Pond Pumps are designed to pump water containing solid material to a pond filter or a waterfall. The Aquaforte O Series pump cage is specially designed to prevent it clogging by providing the maximum surface area. Aquaforte O Series Pond Pumps can also be used dry mounted inline just like the Aquamax range, They also have the same 1.5 inch threaded inlet and outlet. When using a pond pump to power a filter system reliability is essential. That is why the Aquaforte O Series Pond Pumps key features provide total reassurance. Key Features: Pumps large quantities of pond water with low electricity consumption Vortex impellar blade can handle solids up to 6 mm Pump outlet has a screw thread hosetail 25-38mm 2 Year Manufacturer Backed Guarantee Ecomax 0 Series Pond Pumps are also suited for dry application (inlet must be under water level). Available Models: ECO MAX O-8500 (95W) ECO MAX O-8000 PLUS ECO MAX O-18000 PLUS PRICES AVAILABLE ON REQUEST