Re: N Taenia egg eating!

[David Sanchez <barbax2@yahoo.com>]

"The reason that I said the KH and CO2 "help"
> determine pH "

This is correct no argument here. However the level KH
and pH will tell us the the level of CO2 in our
system. Forgive me for wording my statement
incorrectly. There is, howver, aorrelation to CO2 
level and pH and KH.

"This isn't true.  CO2 level and KH (Carbonate
> Contents) are independent of
> each other, but ratio of the two together help
> determine pH of the
> water."

My point is that there is a correlation between KH,
pH,and CO2. This what I said

David said
"hy are yoiu using a CO2 system if you have water
> with
> > oKH to begin with Colin? The lower the KH the
> higer
> > the CO2 level."
> 

Eric I think perhaps we are getting off topic here. My
point is that if you have a low KH and low pH there is
no need for CO2 injection because using these factors
we are able to determine the level of CO2 in a system
of water.  The fact is that by measuring the level of
both pH and KH you will have the CO2 level in your
system. From this premise we can determine why we do
or do not need a CO2 system in our aquaruims. I have
not had a CO2 systemn in any of my aquaruims yet my
tanks have lush plant growth. I do need a CO2 system
because I already have enough CO2 in my system. DO
natural bodies of water have CO2 injection? no they do
not. My point here and what awe are discussing is the
need or lack there of of a CO2 injection system. Just
saying you have to have a CO2 system to have good
plant growth is not corrrect and is based on a lack of
understanding the relationship of all the given data. 


Dave Sanchez




--- Erik Olson <erik@thekrib.com> wrote:
> On Mon, 28 Jan 2002, David Sanchez wrote:
> 
> > "This isn't true.  CO2 level and KH (Carbonate
> > > Contents) are independent of
> > > each other, but ratio of the two together help
> > > determine pH of the
> > > water."
> > 
> > 
> > 
> > Actualy your mistaken about that Eric. KH and pH
> both
> > determine the level of CO2 in a body of water.
> 
> David, I stand by my original post.  Carbonate and
> CO2 together influence
> pH, not the other way around.  pH doesn't determine
> anything, but rather
> it is those OTHER "things" that determine pH.
> 
> The reason that I said the KH and CO2 "help"
> determine pH is because the 
> pH is also determined by all other acids and bases
> in the water.  So if 
> there is an abundance of, say, phophoric acid, this
> will skew the pH lower 
> than you'd expect in a straight carbonic acid buffer
> system.
> 
> > This comes from a basic understanding of the pH
> equation. I have a
> > table showing the relationship between KH, pH and
> CO2 from one of my
> > college biology courses i will scan a copy and
> post it later when I
> > get home from work.
> 
> It's also on the Krib, at
>
http://www.thekrib.com/Plants/CO2/kh-ph-co2-chart.html
> 
> In fact, that whole directory,
> http://www.thekrib.com/Plants/CO2
> has massive amounts of material on that subject.
> 
>   - Erik
> 
> -- 
> Erik Olson
> erik at thekrib dot com
> 
> 
>
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