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Powerheads

Contents:

  1. pumps in homemade wet-dry filters?
    by garyp-at-tekig5.pen.tek.com (Gary R Pimm) (18 Aug 92)
  2. 802 powerhead as a wet/dry sump pump
    by fssmith/venus.lerc.nasa.gov (Greg Smith) (7 Apr 1992)
  3. Filters & Pumps after Power Outages
    by jdp/polstra.UUCP (John Polstra) (25 Nov 91)
  4. Filters & Pumps after Power Outages
    by richb/kronos.com (Rich Braun) (25 Nov 91)
  5. Most powerful Power-head ?
    by PLai/cup.portal.com (Patrick L Faith) (3 May 92)
  6. Most powerful Power-head ?
    by wkb/cbnews.cb.att.com (wm.keith.brummett) (7 May 92)
  7. Most powerful Power-head ?
    by PLai/cup.portal.com (Patrick L Faith) (7 May 92)
  8. Re: 802s, just say no - Say what?!
    by bowden/convex.csd.uwm.edu (John W. Bowden) (25 May 92)
  9. (No Title)
    by ()

pumps in homemade wet-dry filters?

by garyp-at-tekig5.pen.tek.com (Gary R Pimm)
Date: 18 Aug 92

In article <1992Aug15.153028.1-at-pomona.claremont.edu> efang-at-pomona.claremont.edu writes:
>
>I've a question for those who have built a wet dry without using a standard
>water pump; just powerheads or something like that...
>
>What kind of pump did you use?
>How well does it work? How much impaired is it in its function?
>What would you reccommend?
>
>Thanks, Eric Fang

On the wet dry that is on my wifes central american cichild tank we are 
using a maxijet 1000. It seems to work fine. The maxijet lifts the water 4'
and delivers 95 gallons per hour. 

The practical limit for the maxijet 1000 is right around 4'. Any more than
this and they start to buzz. Mine starts buzzing when the sump is low. 

At one point we wanted more flow so we tried runing two pumps side by side.
The draw back was that both pumps would buzz. What was hapening was both 
pumps saw a little more than 4' head. Next we tried running the pumps in
series (output of the first pump conected to the input of the second pump.
With this setup we got almost double the flow (180gph) and the buzzing
problem went away. With the pumps in series each pump efectivly sees 1/2
the total head.

The maxijets that we are using have all been reliable.
Curently we have 3. One in the wet dry, one in a custom canister system
and one as the circulator pump in our hot tub. Really. The pump died in the 
hot tub and I needed a quick fix. Moves just enough water to keep it hot.

At just $15.00 I think the maxijet 1000 is a good deal.

gary 

802 powerhead as a wet/dry sump pump

by fssmith/venus.lerc.nasa.gov (Greg Smith)
Date: 7 Apr 1992
Newsgroup: alt.aquaria

In article <1992Apr7.155822.24375-at-cbnewsd.cb.att.com>, philt-at-cbnewsd.cb.att.com (philip.tomaskovic) writes...
> 
>I was told that an 802 powerhead was adequate for running a small
>wet/dry filter and had sufficient strength to pump up 5 feet from
>the sump to the top of the tank.
> 
>I bought one and it's strong enough but I'm having trouble attaching
>my return hose to it. A 1/2" ID hose fits inside the powerhead
>exhaust, but it's easily loosened and can pop out. The outer diameter
>of the exhaust seems too big for 5/8" hose and too small for 3/4"
>unless a very strong clamp (non-metal of course for marine use) can
>be attached.
> 
>Can other people that use 802's for sumps tell me what hose and
>fittings they use?
> 
>Thanks
>Phil
use the 5/8 inch hose.  Heat it up in some hot water first and it will
slip over the powerhead output.  You may also want to plug the port on the
powerhead output.


Filters & Pumps after Power Outages

by jdp/polstra.UUCP (John Polstra)
Date: 25 Nov 91
Newsgroup: rec.aquaria,alt.aquaria

In article <1991Nov20.175028.4311-at-kronos.com> richb-at-kronos.com (Rich Braun) writes:
> The problem is that powerheads and power filters are made with 2-pole
> motors that don't always restart:  they start most of the time, but
> with no guarantees; if the rotor shaft stops right between the field
> poles, the magnetic pull will be equal in both directions.
> 
> Question:  is there a brand of powerheads and/or power filters that
> uses self-restarting motors?

I've been using a Maxi-Jet 1000 to power my trickle filter for around
six months.  I power it off for every feeding (twice a day).  I have
never seen it hesitate to start up when I turn it on again.  I can't say
the same for the various brands of powerheads I've tried.
-- 
   John Polstra               polstra!jdp-at-uunet.uu.net
   Polstra & Co., Inc.           ...!uunet!polstra!jdp
   Seattle, Washington USA              (206) 932-6482
   "Self-knowledge is always bad news."  -- John Barth


Filters & Pumps after Power Outages

by richb/kronos.com (Rich Braun)
Date: 25 Nov 91
Newsgroup: rec.aquaria

jdp-at-polstra.UUCP (John Polstra) writes:
>I've been using a Maxi-Jet 1000 to power my trickle filter for around
>six months.  I power it off for every feeding (twice a day).  I have
>never seen it hesitate to start up when I turn it on again.  I can't say
>the same for the various brands of powerheads I've tried.

My Hagen 802 has also never failed to restart after a feeding.  But
I'm not sure that means the unit is designed to always restart; it
just says that its restart rate is greater than 99% of the time (i.e.,
the critical angle between the two poles is less than 1.8 degrees,
a 100th of a half-circle).  Reef owners or others who spend a lot of
time out of town will probably want a better guarantee than that.

-rich


Most powerful Power-head ?

by PLai/cup.portal.com (Patrick L Faith)
Date: 3 May 92
Newsgroup: alt.aquaria,rec.aquaria

I have a 125 gallon tank and a wavemaker using Penguin 1140's, and it
doesn't seem to move the water around enough.  So I was thinking
of getting power heads that move more water.  I have the manufactures
specs on the power heads, and they list the Hagen Aquaclear 802 as
400 gph and the Perfecto 400 as 400 gph.  The 1140's I have are suppose
to be rated at 300 gph, but a Aquaclear 402 I have which is rated
at 270 GPH seems more powerful than the 1140's.  Also, the only
power head that has a wattage rating is the Aquaclear 802, which is
suppose to be 20 W.  I have temperate tank so wattage per gph is
slightly important to me.

Another thing of some importance is since I'm using a wavemaker, and am
turning the power head off/on every 45 seconds, which powerhead handles
being cycled the best.  I have some small power heads that hate being
cycled.  Any way, I was woundering what the net wisdom is on using
power heads, which ones are Really powerful, and how much wattage do
they really use ?

                               PLai ( P L Faith )


Most powerful Power-head ?

by wkb/cbnews.cb.att.com (wm.keith.brummett)
Date: 7 May 92
Newsgroup: alt.aquaria,rec.aquaria


    In article <58367-at-cup.portal.com>, PLai-at-cup.portal.com (Patrick L Faith)
    writes:
    > I have a 125 gallon tank and a wavemaker using Penguin 1140's, and it
    > doesn't seem to move the water around enough.  So I was thinking
    > of getting power heads that move more water. ...

    At least one of the local stores had Eheim 1250 hobby pumps hanging on
    the sides of a large reef tank.  The 1250 has an integral sponge input
    filter and an output nozzle on its top.  Eheim rates these at 1200
    liters per hour, but they seem to me to put out much more than the Hagen
    powerheads.  I use a 1250 as the return pump in my trickle filter.

    > I have temperate tank so wattage per gph is slightly important to me.

    I believe an Eheim 1250 draws 28 watts.

    -- Keith

-- 
    | (614) 860-3187         Copyright (C) 1992, by       AT&T, Room 3B202 |
    | att!cblph!wkb  or,     W.K. Brummett and AT&T      6200 E. Broad St. |
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    `----------------------------------------------------------------------'


Most powerful Power-head ?

by PLai/cup.portal.com (Patrick L Faith)
Date: 7 May 92
Newsgroup: alt.aquaria,rec.aquaria


As far as powerheads go, MaxiJets are NOT the most powerful.  AquaClear
802s (Hagen) will pump almost 2 times as much at 4 feet of head.  We've
used hundreds of 802s in the past years as filtration pumps in Wet/dry s
and they work superb!

Now, there are 2 new powerheads on the market that simple outdo anything!
They are called QT Otto - and there are 2 models:  2000 and 3000 liters
per hour!!! That's 500 and 800 gal per hour - And that's at 1 foot of
head pressure.  

We have been using the PH2000 for about 6 months without a single faiure!
(That's about 0 out of 1000 units tested) - Pretty impressive, huh?!  
The 3000 is sceduled to be released soon.  

Both look almost exactly the same as the Hagen 802s.  I would speculate
that the Aqua Clears share the same manufacturer.  Several practical
additons though:
        1.  A threaded air inlet with a threaded plug
        2.  Quick disconnect on the nozzel
        3.  Excellent 4 suction cup mounting platform
        4.  Other useful attachments

Price:  the PH2000 is about 20-30% more than the Hagen 802 (via my distr.)

If this is of interest to anyone, send me mail and I'll post more details.

Jonathan Burke          burke-at-cis.ohio-state.edu
AquArt Aquariums -      Columbus, Ohio

(reposted through PLai)


Re: 802s, just say no - Say what?!

by bowden/convex.csd.uwm.edu (John W. Bowden)
Date: 25 May 92
Newsgroup: rec.aquaria



(No Title)

by

> Well, I had an 802 powerhead on our first w/d filter and I was underwhelmed
> by it.  It pumped about 120 gph at a 4' head.  It would only restart about
> 60% of the time by itself.  It wasn't airlocked - as far as I could
> tell, the impeller was caught in a null field.  We finally tossed it in
> the garbage and bought a real pump (Rainbow Quiet One).  
> 
> ------
> George

I've so far had 4 of 4 802's fail within 6 months.  I will never
personally ever again buy a Hagen product.

Also on my sh*tlist is Supreme.  I['ve had 3 of 3 supreme submersibles
stick within 2 months of purchase.  BTW, I refer to the submersible
heaters.  I'll stick with Ebo-Jaeger heaters and Penguin powerheads
from now on.

John "with no financial interest" Bowden,


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