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hi..can anyone help me with my eheim filter..
last night my filter start to make noise..rattling sound..so i though it might be
some air inside..done the usual procedure but the sound still there..
here some video example of how my filter motor sound like after i open it..
is this normal? https://www.youtube.com/watch?v=3upuS8Ekx

It should be due to Air only.

Also check the connecting pipes for blockages, if any?

Clean the propeller. Also check if the magnet is cracked.