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Re: CO2 Diffusion area

>Date: Wed, 26 Apr 2000 22:58:33 -0500
>From: "Dustin Swanson" <dustins at greatlakeseng_com>

>I was wondering if there's a general formula or chart for the surface area
>of the CO2 in the "bell" that should come in contact with the water based on
>the size of the tank.  

There is such a table in "The Complete Book of Aquarium Plants" by Allgayer
and Teton. It shows surface area in cm^2 needed based on KH and tank volume
in liters. 

For a typical value of 5 dKH, surface areas are as follows:

Volume:  1,000   800   600   400   200   100 
Area:      180   140    80    50    30     *

For a value of 3 dKH, 

Volume:  1,000   800   600   400   200   100 
Area:      140    90    40    40     *     *

* CO2 produced by fish is sufficient under normal circumstances

George Booth, Ft. Collins, Colorado (booth at frii_com)