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 Judging Co2 Amount using Ph & KH

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Syklyd
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Title : I am the Walrus.

Posts : 213
Join date : 2011-06-26
Age : 40
Location : Eugene, OR

PostSubject: Judging Co2 Amount using Ph & KH   Wed Jul 06, 2011 10:38 pm

Here is a helpful tool for figuring out how much Co2 is in your tank when growing plants. There's debate as to whether or not it's an accurate method or not, but I find it's a good way to get a general idea.

Fairly simple, just test your KH & Ph, and find where they cross on the chart. Ideally, between 10 & 30 is the sweet spot. Any more than 30, and the Co2 may harm your fish.

Co2: KH/pH Chart
pH 6 6.2 6.4 6.6 6.8 7 7.2 7.4 7.6 7.8 8
KHº
0.5 15 9.3 5.9 3.7 2.4 1.5 0.9 0.6 0.4 0.2 0.1
1 30 18.6 11.8 7.4 4.7 3 1.9 1.2 0.7 0.47 0.3
1.5 44 28 17.6 11.1 7 4.4 2.8 1.8 1.1 0.7 0.4
2 59 37 24 14.8 9.4 5.9 3.7 2.4 1.5 0.9 0.6
2.5 73 46 30 18.5 11.8 7.3 4.6 3 1.9 1.2 0.7
3 87 56 35 22 14 8.7 5.6 3.5 2.2 1.4 0.9
3.5 103 65 41 26 16.4 10.3 6.5 4.1 2.6 1.6 1
4 118 75 47 30 18.7 11.8 7.5 4.7 3 1.9 1.2
5 147 93 59 37 23 14.7 9.3 5.9 3.7 2.3 1.5
6 177 112 71 45 28 17.7 11.2 7.1 4.5 2.8 1.8
8 240 149 94 59 37 24 14.9 9.4 5.9 3.7 2.3
10 300 186 118 74 47 30 18.6 11.8 7.4 4.7 3
15 440 280 176 111 70 44 28 17.6 11.1 7 4.4
20 590 370 240 148 94 59 37 24 14.8 9.4 5.9
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Christople



Posts : 5
Join date : 2011-07-12
Age : 20
Location : portland

PostSubject: Re: Judging Co2 Amount using Ph & KH   Tue Jul 12, 2011 12:36 pm

the problem with this method I think is that volume doesn't come into play.
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