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Re: Kh, Ph, CO2 table...
> From: "Tom Misiak" <tmisiak at nortel_ca>
> Date: 17 Dec 1996 08:53 EST
>
> I've seen a table listing the CO2 concentrations based on values of Kh
> and Ph in this list quite some time ago. Could someone re_post this
> table or point me to where I could find it? TIA
I'm 99.4% certain it's in the water chemistry FAQ, but here's another
copy anyway:
From: hopea at cs_Helsinki.FI (Pauli Hopea)
Date: Sat, 11 Jan 1992 23:25:22 GMT
Subject: CO2 / KH / pH relations table.
Organization: University of Helsinki, Finland
The following table is from a finnish aquaria magazine (Akvaariomaailma)
The relationship of CO2 , pH and KH
-----------------------------------------------------------------------
\ pH | 6.0 6.2 6.4 6.6 6.8 7.0 7.2 7.4 8.0
KH\ |
-----------------------------------------------------------------------
0.5 | 15 9.3 5.9 3.7 2.4 1.5 0.9 0.6 0.2
1.0 | 30 19 12 7 5 3 1.9 1.2 0.3
1.5 | 44 28 18 11 7 4 2.8 1.8 0.4
2.0 | 59 37 24 15 9 6 4 2.4 0.6
2.5 | 73 46 30 19 12 7 5 3 0.7
3.0 | 87 56 35 22 14 9 6 4 0.9
3.5 | 103 65 41 26 16 10 7 4 1.0
4.0 | 118 75 47 30 19 12 6 5 1.2
5.0 | 147 93 59 37 23 15 9 6 1.5
6.0 | 177 112 71 45 28 18 11 7 1.8
8.0 | 240 149 94 59 37 24 15 9 2.4
10 | 300 186 118 74 47 30 19 12 3
15 | 440 280 176 111 70 44 28 18 4
-----------------------------------------------------------------------
| CO2 milligrams/liter
---------------------------------------------------------------------------
The article suggested that 5-20 mg/l CO2 would be good for a normal
community tank due to the fact that most fish don't like CO2 to be
over 20mg/l and plants need at least 5mg/l for photosynthesis.
--------
George in Colorado With A -36 F Windchill