The Oase Filtoclear range of pressure filters, complete with ultra violet clarifiers, are the ideal solution for keeping your water clear and healthy. For ponds up to 6,000 litres without fish or 3,000 litres with fish Technical details for Filtoclear 6000 pressure filter system with uv Integrated UVC Clarifier 11 Watt Suitable for ponds up to max. 6000 litres Suitable for ponds with fish max. 3000 litres Dimensions in mm (Ø diameter x Height) 380 x 430mm Inlets and outlets 3/4" to 1 ½" hose (1½" hose recommended for maximum flow rate) As with all filter systems they must be sized based upon: on the volume of water in your pond whether or not you have fish, and if you have Koi. Basically the bigger the pond, the bigger the filter required. A pond with fish will require a filter a least twice the size as that of a pond without fish. If you are unsure of the volume of water in your pond please contact us for support and we will gladly help you choose the correct size filter for your pond. Typical Set Up As well as being incredibly easy to clean, another major advantage of using a pressure filtration system to clean your pond is the fact that it can be used to power a waterfall or stream also.