# Re: [APD] CO2 revelations

```The math should read 246.5mg of NaHCO3 in the prior post.
1dkh = 17.8575 mg/liter CaCO3or (17.8575-7.143)= 10.7145mg/liter CO3  so 10.7 *(mw NaHCO3 84)/(mw CO3 60)= 14.98 mg/liter NaHCO3
So 149.8 mg NaHCO3 in a liter should be 10dkh.
-Paul

On Thu, 22 Sep 2005, Jerry Baker wrote:
> Jerry Baker wrote:>> The atomic weight of NaHCO3 is 84, and the atomic weight of HCO3 is 61.>> That means for every gram of NaHCO3 you have 726mg of HCO3. If you can>> measure out 246.5g of NaHCO3 into 1 liter of water, you should have>> 179ppm HCO3 (bicarbonate). I'm not sure what the test is measuring>> exactly, but if it's bicarbonate that should do it.>> If it's measuring CaCO3 equivalence, measure out 300g of NaHCO3 into 1> liter to get 10°dKH.>>>> --> Jerry Baker>>> _______________________________________________> Aquatic-Plants mailing list> Aquatic-Plants at actwin_com> http://www.actwin.com/mailman/listinfo/aquatic-plants>

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