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How much CO2 is in your tap water?
My tap water has always had a PH around 7.5. But lately my tanks have been
running over 8, where they used to be around 7.6 - 7.8 in the past. So I tested the KH (5) and PH (7.0) of my tap water, which would seem to indicate 15 ppm of CO2. I'm a little surprised to find it this high during the summer (warmer water). I'm letting a batch of tap water sit, so I can test the PH after the CO2 escapes. I don't know what the KH was in the past, the city water documents no longer list KH or DH. |
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