Does The Noise Of A Filter Annoy Fish?

[woopsidaisy]

This is probably a very silly question. But our filter makes quite a loud "whirring" noise. Does this bother the goldfish? My DH says it must drive them mad! Do all filters make this type of noise?
Thanks.

[EauRouge]

Not sure if it bothers them or not, is it very loud? It shouldn't be whirring really, it might help if you give them impeller a good clean. Has it got a venturi on the outflow? It's a little gizmo that makes the filter shoot out loads of bubbles in the outflow of water. They are bloody noisy and not necessary so if there's a way to ditch it then you can.

[EauRouge]

PS tempting though it is, don't turn the filter off unless you're cleaning it; the good bacteria in there need a flow of water to survive.