Fluval 305 vs Fluval 405

[jnms]

I just added a Fluval 405 to my existing setup and I am finding it very noisy.

I already have a Fluval 305 which is actually pretty quiet. Should there be that much noise difference between these two filters?

 

[tcarswell]

mines close to silent sitting on the carpet. Give it a shake and see if there is air trapped and make sure you have a good prime.

 

[jnms]

Thanks. There does seem to be quite a bit of air stuck inside it - when I move the filter some comes out.

What's the best way to ensure I have a good prime on the filter?

 

[smpage]

should be just as quiet as a 305.

 

[jnms]

Well I will try and get rid of the air. If that doesn't work, I will swap the impeller and see if that makes any difference.

Any other suggestions?

 

[meghanashley]

Fill with water and pump till you have no bubbles coming out of the output hose. You had a 305 already though, maybe I'm not understanding what prime means. Sounds like the canister is not full though