high co2 level

  1. M

    What is worse: permanently high CO2 or dramatic pH swing?

    Hi all, recently I do some pH monitoring in my tanks with CO2, and have some questions which I can't find answer for. I have read some [non-scientific] articles where the authors say that rapid pH changes cause stress to fish. When I measured the pH in my tank during 24 hours period, I have...
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