How Quickly can I safely change ph using CO2

[Edjen]

I just received the ph controller for my CO2 setup, which is a pressurized system with a regulator, selonoid valve, and a bubble counter.
My question is, given my tanks present ph of 7.6 with a KH of 4.5 can I set the controller to 7.0 or will I have to take the ph down in steps?
Thanks, Ed

 

[Hulka9]

Just set it to 7.0 and you'll be fine.

It can only put as much co2 in as you allow. So just set the bubble counter to around 2bps.

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