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Air Pump
I just returned from a 2 week trip through S.E. Asia. My boss kept reminding
me this was not a fish collecting trip but a business trip. I still managed
to make a few side trips to look at fishy things. Perhaps the most
interesting item I saw on the trip was a fairly large air pump that was also
extremely quiet. From a few feet away I was unable to hear it at all. It
was virtually silent. There were two of the pumps running and they supplied
air to 8 tanks each. The smallest tanks were 60 gallons and the largest were
in the 80-90 gallon range. All the tanks were of the tall configuration. The
pumps were driving multiple airstones and bubblers in each tank. Each pump
was driving 30-40 airstones at a depth of approx. three feet. There were
fairly large quantities of air being driven and not just a slow trickle from
each airstone. Even more impressive was that both of the pumps had 1991
manufacturing dates on them and they were being run outside! These tanks and
pumps were covered by a small sunshade but were basically open to the
elements. I never saw the pumps available in any of the fishshops. They
label said they were manufactured by P.T. Yasunaga of Indonesia. I tried the
phone book in Singapore but no luck. The label also said they were 50/60 Hz
100 Vac systems with an output of 32 L/min. I have done some web searches
with no success. Anyone out there know anything about these pumps?? If they
are not too expensive I would like to get my hands on one or two.
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