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Re: recommendations for moving up from dinky air pumps ?
Thats the one. I have had a 40 for the past few years. Without
any problems. It is providing air for all of the tanks inside my spare
bedroom. In Honolulu it was outsid emy bedroom window and couldn't be
heard over the background noise. Then I had esily 40+ tanks and other
goodies being supplied by this one pump. I have been considering getting
another bigger pump (maybe an 80) to provide air for my inside and outside
tanks (outside are 150, 100, and 50 gallon rubbermaid stock tanks). Hey
if you ever consider marketing them, please let me know. I am sure there
are a bunch of people in Maui, and Honolulu that would want one.
On Fri, 27 Oct 2000, Wright Huntley wrote:
> Time for my depreciated $0.02.
> I have been living on a host of small vibrator pumps, for a long time now.
> The sum of them is noisy, as my fish are all over the house and the fishroom
> is *in* the house.
> In my work, I have used many Gast rotary-vane pumps, piston pumps, diaphragm
> pumps, vibrator pumps and what have you. I have three small rotary-vane
> pumps that work well, but are really noisy. Virtually all kinds are too
> noisy for in-house use. [I have not heard the new "floating pistons," so
> don't really know about them.]
> I just purchased, and received today, a used Hagen "The Pump" Model 40,
> which should do my 100+ tanks rather easily. Eager to see where I must hide
> it, I immediately plugged it in.
> You should have been here to see my jaw drop. I had used commercial diapragm
> pumps before, and they had a *most* noticeable hum to them, even when the
> air was fed through a silencer. This thing made less noise than just about
> any of my small $10 vibrator pumps, even with air fully blocked! If I plug
> the cord in at full length, I can barely tell it is working, over the other
> pump in the room. If I open any valve on the outlet manifold, the air hiss
> totally wipes out any pump noise. It is a blast, literally.
> It's rated at 34 db noise, and 5.63 psi, closed, but I measure more than 7
> (uncalibrated gauge). That will drive any depth tank, and nearly do an
> airstone at the deep end of your swimming pool. It is rated at 44 L/min.
> volume, but that is at over 2 psi, which will, again, easily work any normal
> tank depth.
> This is a re-label of a Japanese pump, according to Oleg (Alita,
> http://www.alita.com/airpump/al4680.html), and it is a very clever acoustic
> design, throughout. [I'm an engineer, and have to take *everything* apart.
> ;-)] They call it a "linear pump," but I think it is possibly the same as
> the floating piston pumps. IDK. It seems to be a heavy-duty diaphragm pump
> with some serious design work to get the noise level down. The best
> comparison is the old "Silent Giant" with its half-gallon plastic shell full
> of sand. Repair kits *are* available, BTW, as are new washable inlet
> The price on these, through the normal aquarium trade, is fairly outrageous.
> [Once I have some experience with this one, maybe I'll see if Sierra Aquatic
> Gardens, Assoc. <www.wrighthuntley.com> should private label the Alitas for
> direct web sales.]
> Ruth Warner wrote:
> > Hi; When I took over Ed's fishroom I was somewhat familier with the set up
> > but
> > I am having the same broblem,so when I get disgusted with fiddeling around I
> > just
> > go and buy a bigger pump.But I also don't know how old my pump's are.Maybe I
> > can learn something from this Ruth W.
> Wright Huntley, Fremont CA, USA, 510 494-8679 huntleyone at home dot com
> "Ignorance creates a fertile climate for demagogues;
> maybe that's why politicians give so much support to
> the public education establishment."
> *** http://www.libertarian.org/ ***
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