Babel Fish wrote:

"John Duncan Yoyo" wrote in message
...


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.


It is an "Aqua Air" model by Interpet. It doesn't hiss - it hums, rather
loudly.
Thanks for your observations - I will look for something else tomorrow.

Many thanks.



You're saying the air stone is an aqua air? or are you talking about the
pump? Which one's the one making the humming that's loud? If the air
pump, make sure it's not resting against anything else, or on a surface
that could act like a resonance chamber (hollow underneath etc).

Also try putting a magazine underneath it to see if that quietens
things, as part of working out which bit of the air pump/stone is
generating the noise.

Velvet