Filter Noise

[ryno1974]

I bought a used Fluval 403 and it is making a rattling/grinding noise. I have googled my problem, and everything points to air trapped in the filter. I have shaken the living daylights out of it (man is a filter that big heavy when it is full of water!) but it is still doing it. I am planning on leaving it run until tomorrow evening and if it is still doing it I will take it down and redo it. Any suggestions on the best way to avoid this problem? The filter appears to work great besides the noise.

Thanks.

 

[rdp50734]

maybe the impellor is loose/broken strip it all down clean and have a look post pics if your unsure

 

[Tropical_Fish]

Mine made excessive noise when I first set it up, following the instructions I just gently rocked it from side to side which expels all the air - mines a 304. It now runs fairly quietly

 

[rabbut]

Considering the age of the 403's now, I'd suspect the bearings are sot. A new set may go a long way to solving the issue. Alternatively, the motor head may be on it's way out, or there could still be an air-lock. Old fluvals (pre 04/05 series) are solid as rocks, but the new sh!? cannot touch them. I wouldn't buy a modern Fluval, but the 03 series were close to bomb-proof.

All the best
Rabbut