Bioflow filtersystem 3r comes with media and a 600 lph pumpr for aquariums with a 30cm height l155xw102xh417r the juwel bioflow internal filter system which has undergone several tests by independent institutions has long been one of the world leaders in filter systems for modern aquariums and has proved its worth a million times over large filter volumes and easy carer the juwel bioflow filter system stands out from the crowd with its extra large filter volumesr this gives plenty of room