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Thread: CO2 Chart
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Old 02-07-2007, 06:50 PM   #11
Hoppy
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The charts and calculators are not at all worthless. They are very good, but not for determining from the tank water KH and pH what the CO2 concentration is. If you use a drop checker, with distilled water having a known KH in it, the chart and calculator work extremely well. If you read carefully, Chuck Gadd notes in his discussion that the equation is not valid for water that isn't "perfect".
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