[APD] CO2 Charts and High pH

["Joshua L Wiegert" <JLW at dune_net>]

Hello all.

  As part of an experimental procedure, I'll be using NaOH to raise the pH
of aquaria above 8.5.  I'll then be measuring pH and KH of the water, and
from that determining CO2 (using those handy charts.)

  I'm not a chemist, and only generally understand how you can determine CO2
availability by the chart.  However, will using a high concentration of base
(or even an acid) to alter pH effect the accuracy of the chart?  Any ideas?

Joshua.
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Joshua L. Wiegert
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Feel free to contact me by any of the above means for any reason.
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