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This is definately another way to address it. However, personally, I =
don't like the inherit reduction in the efficiency of the powerhead. =
With a strainer, you just pull off loose bits of plants and whatnot when =
you see them, no big whoop. In the case of foam, you have an immediate =
reduction by the drag created by the matrix of the foam, and to worsen =
that, you're capturing rough and even fine particulate matter. =20
=20
If my goal were to create current, I'd want to have that device as =
unimpeded as possible.... You're going to generate additional heat you =
probably don't want by having this inefficiency. =20
=20
I would then use a more efficient device (such as an air driven sponge =
or an _external_ canister designed to have that drag as part of its =
caluculated GPH) to capture the particulate matter, if your goal is to =
also break up some of the detritus and return it's nutritional value to =
the plants. =20
=20
Todd
________________________________
From: owner-nanfa-l-in-nanfa.org on behalf of matt ashton
Sent: Mon 5/2/2005 11:57 AM
To: nanfa-l-in-nanfa.org
Subject: RE: NANFA-L-- powerheads
Some also have the nice option of fitting a sold seperately foam =
prefilter. I used a similar PVS uptake tube as well before. That way I =
could have the current being generated near the top but the water being =
taken up far lower for an intent to keep the fish away because I did =
have some problems of redside dace getting sucked against the strainer. =
They seemed to like being right up against the current coming out and =
sometimes would get a liiiiittle too close.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">=0A=
<HTML dir=3Dltr><HEAD><META HTTP-EQUIV=3D"Content-Type" =
CONTENT=3D"text/html; charset=3Dunicode">=0A=
<META content=3D"MSHTML 6.00.2900.2627" name=3DGENERATOR></HEAD>=0A=
<BODY>=0A=
<DIV id=3DidOWAReplyText6743 dir=3Dltr>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>This is =
definately another =0A=
way to address it. However, personally, I don't like the inherit =
reduction =0A=
in the efficiency of the powerhead. With a strainer, you just pull =
off =0A=
loose bits of plants and whatnot when you see them, no big whoop. =
In the =0A=
case of foam, you have an immediate reduction by the drag created by the =
matrix =0A=
of the foam, and to worsen that, you're capturing rough and even fine =0A=
particulate matter. </FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 =
size=3D2></FONT> </DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>If my goal =
were to create =0A=
current, I'd want to have that device as unimpeded as possible.... =
You're going =0A=
to generate additional heat you probably don't want by =
having this =0A=
inefficiency. </FONT></DIV>=0A=
<DIV dir=3Dltr> </DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>I would then =
use a more =0A=
efficient device (such as an air driven sponge or an _external_ canister =0A=
designed to have that drag as part of its caluculated GPH) to capture =
the =0A=
particulate matter, if your goal is to also break up some of the =
detritus and =0A=
return it's nutritional value to the plants. </FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2></FONT> </DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Todd</FONT></DIV></DIV>=0A=
<DIV dir=3Dltr><BR>=0A=
<HR tabIndex=3D-1>=0A=
<FONT face=3DTahoma size=3D2><B>From:</B> owner-nanfa-l-in-nanfa.org on =
behalf of matt =0A=
ashton<BR><B>Sent:</B> Mon 5/2/2005 11:57 AM<BR><B>To:</B> =0A=
nanfa-l-in-nanfa.org<BR><B>Subject:</B> RE: NANFA-L-- =0A=
powerheads<BR></FONT><BR></DIV>=0A=
<DIV>=0A=
<DIV>Some also have the nice option of fitting a sold seperately foam =0A=
prefilter. I used a similar PVS uptake tube as well before. That =
way I =0A=
could have the current being generated near the top but the water being =
taken up =0A=
far lower for an intent to keep the fish away because I did have =
some =0A=
problems of redside dace getting sucked against the strainer. They =
seemed to =0A=
like being right up against the current coming out and sometimes would =
get a =0A=
liiiiittle too close.<BR></DIV></DIV></BODY></HTML>=0A=
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