The Planted Tank Forum - View Single Post - Disposable fluval CO2.. nervous.. what else do I need?
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post #13 of (permalink) Old 05-11-2019, 12:43 PM
Asteroid
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This calculator will tell you how low you need your PH to drop with co2 to achieve 30ppm.

https://rotalabutterfly.com/co2-ph-calculator.php

You don't have to get 30ppm, if your worried about your fish, shoot for something less, like 20-25ppm. If your PH is 7.6 generally you need a 1 point drop to 6.6 If your PH is still 7.6 and 7.6-7.8 out of the tap then your not getting really any co2 at the moment.


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