Reduck
Because I can....
It's less loud if I put my finger over the side air inlet of the venturi, but it's still considerably more loud than just the motors and the Prime's fan. My last tank 10 years ago didn't have a skimmer, so I'm honestly not sure what to expect. But that's why I bought something with "ghost" in the name, because I didn't want to see or hear it
Does anybody know if the Tunze 9004 is any less loud?
yea, as new it rattled for a while. I would say at least 3 weeks before it settled down. As the slime coat builds it muffles the noise.