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Re: [APD] Adding Carbonates



Some carbonates, baking soda, only raise KH or carbonate
"hardness".

There is noncarbonate "hardness" also, GH or general
Hardness for easy remembrance, that is largely a measure of
calcium and magnesium. So adding calcium carbonate raises
KH and GH both.

Baking sodda dissolves readily in water and is cheap and
easily obtainable. Calcium carbonte is not readily
dissolved in water but provides a source of calcium, if you
need it.

sh


--- Philippe Lemaire <ph_lemaire at compaqnet.be> wrote:

> So adding Carbonates = adding KH ?
> 
> Philippe
> 
> 
> ----- Original Message ----- 
> From: "Rachel Sandage" <rachelsor at hotmail_com>
> To: "aquatic plants digest" <aquatic-plants at actwin_com>
> Sent: Thursday, November 18, 2004 10:12 PM
> Subject: Re: [APD] Adding Carbonates
> 
> 
> > Warning: oversimplification.
> >
> > pH is a measure of the relationship between the KH and
> the amount of CO2. Add more 
> > CO2, pH will fall. Add more KH, pH will rise.
> >
> > Rachel
> >  ----- Original Message ----- 
> >  From: Philippe Lemaire<mailto:ph_lemaire at CompaqNet.be>
> >  To: aquatic plants
> digest<mailto:aquatic-plants at actwin_com>
> >  Sent: Thursday, November 18, 2004 11:48 AM
> >  Subject: [APD] Adding Carbonates
> >
> >
> >  Hello,
> >
> >  why should more carbonate raise KH and not give off
> CO2 ?
> >  Or does it depend of the pH value ?
> >
> >  Philippe who got Magnesium Carbonate instead of
> Magnesium Nitrate...
> >  Philippe who has no Mg at all in the tap water !
> >
> >  _______________________________________________
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> > 
>
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> > 
> >
>
http://www.actwin.com/mailman/listinfo/aquatic-plants<http://www.actwin.com/mailman/listinfo/aquatic-plants>
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> >
> > 
> 
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=====
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