How noisy is the serafil external filter?
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.
Dr. Bodo Schnell