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I aerated my tap water for 24 hours as you suggested. The pH was initially
7. After 24 hours, it had increased to 8.2.
I also took the following tests:
Tank water 8.0 to 8.2 at 40 bubbles per minute; 7.2 or so at 130 bubbles per
----- Original Message -----
From: Chuck Gadd <cgadd at cfxc_com>
To: Tom & Lianne Herbruck <tom.herbruck at multiverse_com>
Sent: Monday, February 14, 2000 11:11 PM
Subject: Re: Surprising Results
> Tom & Lianne Herbruck wrote:
> > > pH: 8.0 to 8.2
> > > years? Tap water is pH 7.
> > Any idea what is raising the pH?
> > Chuck-
> > I have no idea why the pH is so high.
> > I cranked-up the CO2 to 130 bubbles per minute (on my moderately-planted
> > gallon tank).
> > The pH dropped to 7.4.
> > However, this seems like a lot of CO2 for a small tank.
> Just a little over 2 bubbles per second, doesn't seem very high to me.
> In any event, unless the water comes out of your tap with LOTS of CO2,
> then something is dramatically raising the pH. Maybe you could try
> aerating some tap-water overnight in a glass container, and measuring
> the pH. If the tapwaters 7.0 pH is due to CO2, that will drive most
> of the CO2 out of the water. My guess is that the pH won't change
> during the aeration. Excess CO2 is bad for pipes, so the water company
> tries to avoid CO2 in the water supply.
> I don't recall you mentioning your water hardness values, did you test
> Chuck Gadd
> Director of Software Development, Cyber FX Communications
> e-mail:cgadd at cfxc_com http://www.cfxc.com