Brand new Filter leaking? Weird hissing sound? Bubbles?

[cooledwhip]

I just purchased a brand new fluval 406 filter and I just set it up. Great filter. Powerful and great flow. Works nice. Every few minutes it does some weird hiss or a "cherrrrrrsssshhhh" and bubbles come out of the output. I don't know what this is or if it is even bad. From what I see when I did some research is that it's a small problem with the tubes or a hairline fracture or something. I don't think that's the case. I don't know what it is but anyone's suggestions are helpful. It mostly does it when I shake it around or hit it around.

 

[luca1980]

Its probably just purging any air that is still stuck inside, I wouldn't worry too much. I have a fluval 306 and FX6 on my mbuna tank - the 306 did that a bit when I first set it up, but it settled after an hour or so.

 

[NickAu]

Yep my canister filters do that also after a clean, Takes about an hour to stop.