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RE: PH<7

>Some folks don't use CO2, some plants and all algae use HCO3 instead of CO2
>as a carbon source splitting it HCO3=> CO2+ OH. This raises the pH and also
>softens the water(Removes the KH). Plant growth is slower in these tanks
>some plants cannot grow well in these tanks also.


	Thanks for the explanation. Question - If you have a low KH and a
low CO2 level your plants would probably be suffering, right?

I think my KH value is on the low side. I'm getting a better test kit today
to figure out its real number.