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post #95 of (permalink) Old 04-05-2019, 08:41 PM
cl3537
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Quote:
Originally Posted by LRJ View Post
I had wondered about this as well, but I think what's going on is that the carbonate can take twice as many H+ ions as the bicarbonate, so it only takes half as much carbonate as bicarbonate to get an equivalent increase in KH. Half the potassium but 2x more bicarbonate than carbonate leads to the same change in K. At least, that's my understanding.
I am so rusty these days of course that is it!
The Carbonate <> Bicarbonate equilibrium below 8ph is predominantly Bicarbonate so dosing Potassium Carbonate gives you 2 molecules of Carbonate to 2 molecules of Potassium thus its about the same as using Bicarbonate at 1K to 1CO3 .


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Last edited by cl3537; 04-06-2019 at 01:14 AM. Reason: ph
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