Planted Tank Obsessed
Join Date: May 2004
Location: Athens, Georgia
Testing kH on a CO2-injected tank
I may have been doing this wrong for a long time now. When testing the kH on my CO2-injected aquarium, should I be letting the CO2 in the water reach an equilibrium state with the atmosphere before performing the test? In other words, does the carbonic acid formed by dissolving CO2 in water affect the alkalinity test? It's just a simple acid/base titration, right? So the presence of excess levels of CO2 would cause the test to under-report the true alkalinity? Whoops! I suppose I could experiment a bit and see.
Well, at least my algae is pearling...
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