This unique system takes an all in one pump and matches it up with a box filter, which results in clear water for any pond of up to 2,500 litres 500 gallons. You can essentially think of this as a pump with a built in uvc pushing dirty water up to a box filter where any small debris can be collected. The pump has a flow rate of 1,000lph and comes fitted with a powerful 13w uvc, while the filter box includes three layers of filter media. Br br this set contains the following components please click links below for more information br • pondxpert tripleaction 3000 classic 13w uvc, 10m cable br • fish mate 5000 box filter br • 5m 16' x 25mm 1 hose br • 2 x 25mm 1 clips br br saving made when compared to buying items separately. Br br not suitable for koi ponds. Br br note uvc bulb included.