How noisy is the serafil external filter?

Hello,

I am interested in one of your serafil external filters. Since my aquarium (250 l) is located in the living room very close to the sofa and I already had negative experience with other filters, I would like to know about the quietness of the filter in operation, as a monotonous buzz noise can be very annoying in the long run. 

the serafil external filters are very quiet; they are hardly noticed during normal operation. Of course they should be placed resonance free, furthermore make sure the impeller can always rotate freely.

Best regards

sera GmbH

Dr. Bodo Schnell

 

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