If you want to install a fountain, waterfall or stream, it is important that the pond water will become and remain crystal clear. Clear Control pressure filters can withstand high pressure and the water can bridge a difference in height after the filter. The Green Line pond pump has a large capacity at low energy consumption. Suitable for up to 20,000L of water.the replacement filter media pack for this is 1332098Clear Control 50 Set comes complete with:UV-C Unit 18 Watt.Green Line 8000 pond pump.Filter hose.Filter materials and connecting pieces.Also available -25 Set (1320400)75 Set (1320412)