A pump, filter and UVC housed in a single unit that sits in your pond: just plug it in and go! Perfect for patio ponds or situations where installing messy hose and cables can be a problem. Can produce three fantastic fountain displays while also keeping the water clear and healthy. Can be used in lightly stocked goldfish ponds (up to 2,000 litres). NOT SUITABLE FOR KOI PONDS. NOTE: UVC bulb included. In the Hozelock EasyClear range the 3000 & 4500 do not include a T-piece attachment whereas the 6000, 7500 & 9000 do.