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Posted by John Smith on July 27, 2008, 11:30 am
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gargoyle47 wrote:
> Two questions regarding air pumps:-
>
> I notice that some older books mention diaphragm air pumps can be
> noisy and that rotary/piston air pumps are much quieter. I would have
> thought that modern diaphragm air pumps should be reasonably quiet, at
> least in small tanks. As I have sensitive hearing I am concerned if
> modern diaphragm pumps are now quieter. Is this true nowadays – are
> they acceptably quiet?
>
> (when I asked at my local stockist the assistant said he had his
> aquarium in his bedroom that uses a diaphragm air pump and he could
> hardly hear any noise, but then he was trying to sell me one of those
> pumps).
>
> Any general guidance to look out for – size/cost/models?
>
When a friend of mine owned a fish store, back in the 70's, he used a
smog pump off an auto and ran by an electric motor.
Of course, it made a lot of noise--but then the amount of air it gave
off was phenomenal! And, of course, he had it located outside the
building ... if I remember correctly, 2 or three of these home-brew
units supplied abundant air for all the aquariums.
Regards,
JS
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>
>I notice that some older books mention diaphragm air pumps can be
>noisy and that rotary/piston air pumps are much quieter. I would have
>thought that modern diaphragm air pumps should be reasonably quiet, at
>least in small tanks. As I have sensitive hearing I am concerned if
>modern diaphragm pumps are now quieter. Is this true nowadays – are
>they acceptably quiet?
>