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I am very late on this one, but I just found the information that I am
looking for. In a catalog from Spectrapure (a leading water purifaction
company in the aquarium industry which builds reverse osmosis units, water
softeners, etc.), it states, "a cubic foot of carbon is good for
dechlorination of approximately 1.1 million gallons of water-in-1ppm
chlorine level." But as stated, this varies greatly with the quality of
carbon. My opinion is that a higher quality carbon is definitely worth its
weight in removing "gunky" stuff from the water, and I find that it usually
lasts a long time.
Nick Zarlinga
Aquarium Biologist
Cleveland Metroparks Zoo
216.661.6500 ext 4485
"Who hears the fishes when they cry?"
Henry Thoreau--1817-1862
><)> -----Original Message-----
><)> From: owner-nanfa-l-in-nanfa.org
><)> [owner-nanfa-l-in-nanfa.org]On Behalf
><)> Of Hoover, Jan J ERDC-EL-MS
><)> Sent: Monday, May 16, 2005 11:46 AM
><)> To: nanfa-l-in-nanfa.org
><)> Subject: NANFA-L-- Functional "life" of Carbon
><)> (was "Fish Kill")
><)>
><)>
><)> >>> Personally, I use sponges and bio balls. They
><)> build a bed of bacteria
><)> that
><)> will break down the ammonia/nitrites. Carbon
><)> begins to lose it's
><)> effectiveness as soon as it is put in the water. I
><)> have heard it is quite
><)> inefficient in as little as 3 days.<<<
><)>
><)>
><)>
><)> I remember as a kid reading an article on carbon
><)> in one of the aquarium
><)> magazines. The author referenced several experts
><)> with opinions on the
><)> lifespan of carbon that ranged from very short
><)> (hours or days) to indefinite
><)> (it never wears out).
><)>
><)> Its probably not possible to provide precise rules
><)> for carbon filter "life"
><)> based on time or water volume filtered. Brands of
><)> carbon will have different
><)> filtering capabilities (based on hardness,
><)> porosity, etc.) and aquaria will
><)> have different waste loads (based on number and
><)> biomass of fish, diet,
><)> feeding schedule).
><)>
><)> "Ballpark" estimates, though, should be available
><)> from aquaculture studies.
><)> I have never seen any experimental studies
><)> documenting the functional life of
><)> carbon, however.
><)> Has anyone here ?
><)>
><)> - Jan Hoover
><)> Vicksburg, MS
><)>
><)>
><)> /--------------------------------------------------
><)> ---------------------
><)> / This is the discussion list of the North
><)> American Native Fishes
><)> / Association (NANFA). Comments made on this list
><)> do not necessarily
><)> / reflect the beliefs or goals of NANFA. For more
><)> information about NANFA,
><)> / visit http://www.nanfa.org Please make sure all
><)> posts to nanfa-l are
><)> / consistent with the guidelines as per
><)> / http://www.nanfa.org/guidelines.shtml To
><)> subscribe, unsubscribe, or get
><)> / help, visit the NANFA email list home page and archive at
><)> / http://www.nanfa.org/email.shtml
><)>
><)>
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/ Association (NANFA). Comments made on this list do not necessarily
/ reflect the beliefs or goals of NANFA. For more information about NANFA,
/ visit http://www.nanfa.org Please make sure all posts to nanfa-l are
/ consistent with the guidelines as per
/ http://www.nanfa.org/guidelines.shtml To subscribe, unsubscribe, or get
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