I can't recall what the output pipe looks like exactly on a Berlin, but typically if you put a Chemipure bag, or a polishing pad of some sort directly under the output, this will help. A filter bag with filter floss in it would help as well.
matt rogers
<a href="http://www.threestepstoareefaquarium.com" target="_blank">http://www.threestepstoareefaquarium.com</a>