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Re: [APD] KH question
Thanks, I needed the chemistry lesson. :)
On 11/19/06, Vaughn Hopkins <hoppycalif at yahoo_com> wrote:
> Where I live now my tap water has KH below 1. I don't add anything
> to "buffer" it. I use 40 ppm of CO2 in the tank, and the pH hasn't
> changed enough to cause either the fish, shrimp or plants to complain.
> Incidentally, to buffer a solution requires adding a substance that
> resists increases in pH and a substance that resists decreases in pH
> - always two substances. Adding just one, like bicarbonates, only
> shifts the pH higher, it does not buffer the solution to a specific pH.
> I just felt a need to be pedantic there. Sorry.
> On Nov 19, 2006, at 10:20 AM, Liz Wilhite wrote:
> > I moved recently and went from tapwater with a KH of 9 to tapwater
> > with a KH
> > of 2. The KH in the tank with aragonite is about 6, but the Eco-
> > Complete
> > tank is running about 3. I am just getting my CO2 up and running
> > again and
> > I have a question: with a KH of 3 do I run a risk of the pH
> > crashing? If I
> > need to raise the KH, could I expect to see a consistent, stable KH
> > level if
> > I added a bit of crushed coral to the canister filter?
> > Thanks.
> > --
> > Liz
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