The Planted Tank Forum - View Single Post - New to CO2, pH went from 7.4 to 6.6, can I raise it?
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post #3 of (permalink) Old 09-15-2020, 12:18 PM
Econde
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I wouldn't adjust anything. PH is a fairly good indicator of how much CO2 you're injecting. Many hobbyists here , including myself, have had no problems with a PH drop of 1-1.5 from our base PH due to CO2 injection. My PH drops from around 8.1 to 6.9~7.0 during peak CO2 injection. I have Endlers/Guppies, ramshorns and cherry shrimp in the tank and they're doing good.

And yes if you have your CO2 on a timer. Once it turns off, your PH should rise back to your base PH due to degassing of CO2 out of your tank.


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7.5 Cube - shrimp tank
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