Tropical Fish Keeping - Aquarium fish care and resources

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Snappyarcher 02-22-2012 10:00 AM

CO2 and Water hardness
Hey does anyone understand and could they explain how co2 reduces water hardness?
Im a bit dim on this one!


Geomancer 02-22-2012 10:13 AM

I'm no expert myself... but I don't believe CO2 will affect the hardness of water. It will, however, lower the pH.

Snappyarcher 02-22-2012 10:28 AM

Ok thanks mate.... any ideas how it actually does lower the pH? I have a general hardness of 13.5 and really need to soften the water!


Mikaila31 02-22-2012 10:47 AM

CO2 lowers the pH because it is acidic. If you have hard water though it will not lower the pH very much. I least not much before the CO2 level poses a risk to the fish. Only way to really soften water is to use a RO/tap mix.

Byron 02-22-2012 11:45 AM

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