I have been running a Fluval C3 since May of last year. It has been a really great, reliable filter so far. Just last week, however, I noticed that the stream that shoots over the bio-screen had gotten significantly weaker. I took the filter off and really gave it a good once over and cleaned...

Abridged: Rattling noise/lack of functionality cause by faulty impeller assembly. Not air, not bioballs. First time poster, so apologies if this is the wrong forum to post in. I have owned a Marineland C220 for several months now and like many other owners I have had a slight rattle every...