If you are a small koi pond enthusiast, that appreciates perfectly crystal clear water in your pond, the AQUAPRO AP5000UV Pressure Filter is made for you. The AP5000UV pressure filter is a unit that combines a UV Globe, filter sponges and bio media to allow for crystal clear water and healthy bacterial cycle within your pond. Presented in a cylindrical design, it is very easy to half bury and hide within your garden bed. It is recommended to use the pressure filter in ponds up to 5000 litres in size; however with fish and full sunlight, 1500 litres is the recommended max. The AP5000UV boasts very easy maintenance as it comes complete with a spin handle for an easy backflush to ensure the internal workings are flushed through and cleaned monthly without getting your hands dirty.