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Re: NFC: Another Filter/Aquarium Question

No, at six times per hour your are doing a LOT of
oxygenation but not helping the biological processes
appreciably more. As I stated, a complete change six
times a day gets the water through enough times to
maintain a healthy biological population. Oxygenation
becomes a factor if, you have a high density of
biolife, and/or fish with a very high oxygenation

We are now into my masters thesis/project, and I can
bore everyone with pages of data, but for home
aquariums, unless you have a highly stocked tank, or
are keeping a pound of fish to a gallon then the very
high water turnovers are on the 'wrong' side of the 
cost curve. If, we are talking about marine tanks and
you are trying to come up to the minimal reef
conditions then yes, blast it and let the good times
roll. My friend Tom Miller told me of a fellow who had
275 Xs per hour turnover! More like a whirlpool then a
reef change! Dont try it at home without adult
supervision! I have no idea how he could even see into
the tank at the turbulence.

If cost isnot a factor then go for it, but, for an
example, to achieve a stream effect you can do it well
with a couple powerheads with the sponge
filters.Myself I like them on ugf, and maybe a HOB or
two on a 75.Canisters add another safety factor. Hard
to overfiltrate. Thats the good thing.

There is no one right way, its all variations per the
individual, and 99.999% of them work within simple
parameters. For average tanks that arenot heavily
stocked 6 times a day turnover works. For heavier
stocked tanks 1-2 times an hour is quite sufficient
but if you want more go for it. This is all about
enjoying what we do. 

I use Aquarium Systems powerheads, with or without the

ugf's, and generally go with the larger capacity ones
so actually my water turnover is on the high side but,
mainly because I have had marine systems with corals.

--- Chris Hedemark <chris at yonderway_com> wrote:
> Jake,
> I think more accurate would be moving the water
> through six times per HOUR.
> :-)  Big filters are your friend.
> Chris Hedemark - Hillsborough, NC
> http://yonderway.com
> ----- Original Message -----
> From: "jake levi" <jlevi_us at yahoo_com>
> To: <nfc at actwin_com>
> Sent: Friday, January 12, 2001 10:45 AM
> Subject: Re: NFC: Another Filter/Aquarium Question
> > That depends on what size pump that you want to
> use,
> > and how much water that you want to move. You
> usually
> > want to move at least six times the volume of your
> > tank per day. As a minimum. Most try for 1-2
> changes
> > per hour and use a corresponding size pump. If,
> the
> > tubing is too small dia for the pump you will get
> > backpressure
> > which will wear the pump out much quicker then it
> > should.
> >
> > If you look at the outlets of the pump you are
> > considering you will readily tell what size tubing
> > that you should use for that pump. So, look at how
> > much water you want to turn over, find a pump that
> > will do it that you are happy with and see what
> its
> > inlet and outlet measurements are. Most pumps
> listed
> > in catalogs
> > have the measurements listed.
> > jake
> > --- Larry Needham <LBN at satx_rr.com> wrote:
> > > What size tubing to most of you with bigger
> tanks
> > > have going from the tank
> > > to the Wet / Dry filter?  How big is the opening
> for
> > > where the water
> > > escapes?
> > >
> > > Is an inch too small for 170 Gallon tank?
> > >
> > > Larry
> > >
> >
> >
> > __________________________________________________
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