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Re: Surprising Results

> pH:    8.0 to 8.2
> years?  Tap water is pH 7.

Any idea what is raising the pH?

I have no idea why the pH is so high.
I cranked-up the CO2 to 130 bubbles per minute (on my moderately-planted 75
gallon tank).
The pH dropped to 7.4.
However, this seems like a lot of CO2 for a small tank.
Any thoughts?