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Re: [APD] Estimative Index for CO2 Dosing - Bah!

Thank you George.  We can send a man to the moon, but we can't 
determine the equilibrium value for CO2 in water.  Tsk tsk.

Vaughn H.

On Thursday, March 9, 2006, at 09:31 AM, gbooth at frii_com wrote:

> Someone mentioned CO2 equilibrium values.  This was beat to death back 
> in
> the 90s and the theoretical value for CO2 equilibrium was 0.485 PPM 
> (at a
> specific temperature, etc).  However wonderful that theoretical number 
> is,
> the practical value is around 2-3 PPM.  Resolution was never reached on
> why there was a difference but it was probably due to either
> A) biological respiration (bacteria, algae, plants, fish) keeping 
> ahead of
> diffusion to the atmosphere,
> 2) the contrarian nature of aquarium water.

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