How do I stop my canister filter from producing micro bubbles?

[Michael Hoaster]

I have a Fluval canister filter that has recently been spewing non-stop micro bubbles. So I took it offline, but I'd like to get it working properly again.

I guess that somewhere, air is being sucked in. The gasket on the top seems fine. Maybe the flexible hose?

Anyone had this problem before? Suggestions?

Thanks!

 

[slief]

It could be the hose or where the hose is connected to the fluval or bulkhead.. If anything, that would be the first place I would check.. Particularly the input side. If it were on the output side, you would more than likely be seeing a leak. Is it possible that the place where the water is being sucked in be it your tank or sump is close enough to the waters surface that it's drawing air from there?

 

[Michael Hoaster]

Thanks for your thoughts, slief. The intake is plenty deep below the surface, so I doubt it's that. It could be where the flex hose attaches to the rigid intake tube. I should check all flex tube attachment points.

 

[Reefer07]

Prime it better? I have a Rena and it will run if not filled up all the way and constantly spit bursts of air. (micro-bubbles)
I then have to take off top an fill it up more.
Just a thought.

 

[Michael Hoaster]

Yes, it's the same with mine. I've always been able to stop the bubbles until now, which makes me think it's something new. Thanks, Reefer07. I'll keep trying.