Quote:
Originally Posted by Carissa
If your pH is only changing from 6.6 - 7.1 it doesn't sound like you have enough co2. I could be wrong but I'm pretty sure that with a change that small there's no way you could be injecting enough co2. But if you have low light it won't matter all that much.
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The change in tank water pH in relation to the CO2 saturation is irrelevant. You cannot compare the pH change in one tank with the pH change in another tank. That's why a drop checker is used with 4dkh water. It's only the pH change in the drop checker that indicates the level of CO2 saturation. Having said that, a tank water pH drop of .5 is roughly a 3 fold increase in acidity so that is not a small change by any means.
Cheers,