[fw2fngrs]

Its making rattling noise. Sort of similar to when it first primes and is exhausting air. However this been slowly getting worse. Now its really bad. Is this my impeller or the motor.
I do not know if this matters but I do not use Eheim filters. I made a couple of own sponges and filter floss I replace every 3 mos.
Thanks for your help.
David

 

[Vincent]

This has happened to me when the filter media is severely clogged.

 

[usnthem]

How old is the unit?
I bought a used 2215 and it rattled, I thought it may be the shaft/bushings, that wasn't it. Then I took it to my LFS and they right out said it was the impeller. I bought a new impeller and now it is dead quite, back to Eheim normal!

 

[fw2fngrs]

its a little over 2 years old. it continues to worsen. I am ordering a new impeller...NOW! its seems to be flowing fine,though. just making a **** of a racket.