BTW:
Grungrefjaert sent me this tip on noisy pumps:
http://translate.google.com/translat...language_tools
My Eheim rattled a bit too much for my liking.
It first seemed quite radical to me, but it was so darned easy it barely qualified as a breeze, and it made a heluva difference (I´m really not swearing if I don´t spell it correctly, right?).
Just make sure You mod Your pump before You assemble the whole thing. It will make it even easier.
regards
Mikael S.