Oase BioPress 4000 Pressurised Pond Filter
We bought the set version of this from the Lincolnshire branch a couple of years ago, and it has been a good filter. We got it for a small raised pond on the patio, and it has done a very good job of keeping it clear. Only real criticism is that the waste comes out the same pipe as the return flow, but by adding a Y-piece in line it has meant we do not need to remove the pipe when we clean. I would recommend others do the same.