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Raising CO2 by pH-KH adjustment, possible?
Sorry friends, my 2 previous email are incomplete, here is the completed
With the equations stated with George and other fellow,
pH = 6.37 + log [ ------- ]
From (1), we can obtain 18mg/l dissolved CO2, with
10.98mg/l CaCO3, adjusted to pH6.37.
For a 100l aquarium, you can add 1.098g CaCO3, adjusting the pH with
addition of strong acid to pH6.37, then you can maintain
18mg/l dissolved CO2 for a period of time. (without addition of extra
But, it is only theortical.
Is it possible to carry out by daily addition of dilute buffered CaCO3
There is a Japanese product which stating that in optimal pH and
KH value, CO2 can be raised up to 16mg/l.
I doubt if it is possible to rasie CO2 level by adding their urine-like
product to the aquarium tank.