Carlos said:

I have the same question as Shannon, and was wondering what is enough CO2
gas to lower the PH?

When u said enough, how much is it?

Unfortunately, there is no fixed amount on this. There are simply too
many variables. Surface agitation, type of filtration, size of tank,
number and size of fish, etc.

Basically, you add CO2 in increasing amounts until the pH is where you
want it to be. It takes a while (days) to reach a stable point, so
you have to be patient when setting your rate of flow. Too much will
kill fish.


Greg G.