Re: [APD] KH question

["Mark R" <oldsan at gmail_com>]

I won't embarrass myself discussing the chemistry, however I can report that
my tanks have a KH of about 2.5 and I've never had a "pH crash" in just over
2 years of using co2. With co2 injection pH is consistently 6.4.

Mark


On 11/20/06, Liz Wilhite <satirica at gmail_com> wrote:
>
> On 11/20/06, S. Hieber <shieber at yahoo_com> wrote:
> >
> >
> > I think most often, when folks say "buffer" what they really mean is
> > "alkaline", except for true buffer products such as the Seachem product
> > mentioned. Even with true buffers, you have to have enough of it in the
> > water for it to work.
>
>
> I'm sure you saw that I didn't mention the word "buffer" when I asked the
> question.  :)
>
> My reference to pH crash -- a rapid, large decrease in pH -- is something
> that can occur with CO2 injection.  I got an off-list email from a member
> who had that happen with water at a lower KH than what is coming out of my
> tap.  "Rumor has it" that pH carshes can happen with water that has a KH
> of
> 3.  I was mostly interested in hearing if anyone here could say it had or
> had not happened in their aquariums.  Vaughn's response indicates it's not
> likely.
>
> Liz
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