Re: pH and bicarbonate of soda/baking soda

[Charles n Sue Harrison <csharrison at accessus_net>]

OK Al, but it is more complicated than you want it to be.
  	Tyrone has it basically correct, but the chemistry is 
complicated with divalent calcium and mono-valent HCO3*-  competing 
with the dissolved CO2. Phosphates are added into the mix when you 
feed your fish. Now there is a five way competition. All this would 
be a lot easier if we could take the fish out of the equation.

Why does anyone want to raise the pH of their water anyway? ( because 
of a pH crash due to  . . . ?)
The more one messes with the water the more difficult it is to 
replicate the adjustments. It certainly makes it difficult for anyone 
else who may receive your fish to adjust things back to what the fish 
are accustom to.
My philosophy is to keep things as simple as possible. I try to 
remember the rain forest and the fact that their rain fall is 
measured in meters not in inches like it is here in the US. Keep it 
simple and change as often as possible.

If you throw in organic acids with unknown pKa values and complex 
away a portion of the calcium, magnesium and iron cations the mix 
becomes VERY complex.

So, why? the change? well Leo has given me the reasons and it sounds 
reasonable. So much for the thread . . .

>YES
>Al Anderson
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References:

• Re: Ph and bicarbonate of soda/baking soda
• From: HOLLIS1506 at webtv_net (Leo Arieux)

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