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Re: [APD] CO2 Charts and High pH

Message: 1 Date: Fri, 23 Jan 2004 09:53:04 +0200 From: "Laser"
<laser at rse_co.za> Subject: Re: [APD] CO2 Charts and High pH To:
<aquatic-plants at actwin_com>

Hi Josh

The handy co2 chart will be null & void if you add any buffer. As far
as I can tell the chart can only be accurate in non-buffered water.

Not quite, laser.

Such charts can work with any buffering system, but the particular one we use is aimed at the carbonate/bicarbonate buffer system that comes from the tap in 95% of our water systems. We can adjust KH (carbonates/bicarbonates, usually) as needed and the chart stays accurate. [*No* chart can work in unbuffered water, for the pH is too indeterminant.]

All bets are off if you add strong acids or bases. They will almost certainly react with "stuff" and alter the chemistry drastically. Unless you know what new buffers they form, how they react to CO2, and know how to generate your own charts, fugitabout it. The standard chart is worthless, IMHO, when you do that.


Wright Huntley -- 760 872-3995 -- Rt. 001 Box K36, Bishop CA 93514

"If the majority of Americans didn’t receive their educations at the
hand of government, these clowns couldn’t get enough votes to carry a
fraternity election"  Neal Boortz

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