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Question for George Booth

>Mike Roberts wrote:
>>What pH are you running on that tank?  With that low of a dGH the pH
>>must not be too low otherwise the CO2 concentration would be awfully

I wrote:

>You've got it backwards.  With a low KH, you need _less_ CO2 to drop the
>pH, not more.  With a KH of 2, 14.8 mg/l of CO2 will give you a pH of 6.6.
>With a KH of 4, you'd need 30 mg/l to achieve the same pH.

Sorry, I misread your post.  Still, I suspect I read your meaning