On Mon, 8 Mar 2004 18:01:20 -0000, "Babel Fish"
wrote:

Hi all,

Over the weekend I bought a 'Rena 100' air pump and an 'Interpet Aqua Air'
air stone. The pump describes itself on the box as being 'extremely quiet'.
The problem is, there is a tremendous racket coming from the air stone
itself rather than the pump. I have tried another pump on it and I get the
same pnematic drill sound result.

Can anyone advise as to whether air stones are rubbish and what, if anything
I could get to replace it which would be quiet? I have a Biorb and the air
pump/stone, etc on that is silent. I can't believe how loud the new set up
is - you can hear it all round my house! I can safely say it is not the
pump, as I've tried that on the other tank and it's as quiet as my existing
pump.

Any help thankfully received.

You might have a bum air stone. What kind did you get? How loud are
you willing to accept?

I have a plastic air stone which is adjustable. It is a series of
plates that may be tightened or loosened to control the size of the
bubbles. It makes a very little hissing noise when it is set for very
tiny bubbles. Certainly as loud/quiet as the whisper filter on the
tank. ]

There are white plastic ones which make fine bubbles and are very
inexpensive.


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John Duncan Yoyo
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