My Filter

[Twinklecaz]

Does anyone have any idea why it would suddently be bubbling? It's a Fluval U2 Internal. I have it set (with the venturi) valve to just agitate the water, so there's flow but no bubbles but I came home today and there were a few bubbles coming out of it. I've just fiddling with it but I can't make them go. I also tried just taking the Venturi off but that just gave it max bubbles.

The Platys are going nuts. I think it's coz they like it but I certainly don't!

 

[KAISER]

I had similar trouble with my U3 and the venturi. I decided I didn't like the bubbles anyway so eventually I fully submerged it so it couldn't draw any air. Mine is about 2" submerged now with the top outlet pointed toward the surface and glass.