CO2 capacity

---------- Forwarded message ----------
From: psears at emr1_NRCan.gc.ca (Paul Sears)
Message-Id: <9702041356.AA23424@emr1.emr.ca>
Subject: CO2 Capacity
To: Aquatic-Plants at ActWin_com
Date: Tue, 4 Feb 1997 08:56:15 -0500 (EST)

> From: krombhol at felix_teclink.net (Paul Krombholz)
> Subject: Re: CO2 Capacity.  
> As you can see from the table, the free CO2 would go from 7 to 12 mg/liter
> if you raised the KH from 2 to 4 and kept the pH the same.

	Don't forget that the CO2 is free to come and go.  If the CO2 system,
atmosphere, fish, etc., do not change, the CO2 concentration will stay
the same.  If you force a drop in pH after raising the KH, all you do
is destroy some of the KH again.  The forced reduction in pH would
require addition of another acid, which would react with the HCO3-
and turn a lot of it to CO2, which would leave the solution.

Paul Sears        Ottawa, Canada

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