Ph controller, yes or no?

[Acronuts]

Hey all,
Just wanted to know if those of you out there using ca/ reactors are also using ph controllers to control the co2 in their systems.
I am slowly trying to put all the pieces of the ca/reactor puzzle and this one leaves me thinking.
American Marine seems to think that it is important to control the the Co2 and their website says we should have one in order to control the Co2 so that if it is needed it turns on if it is not needed it turns it off.
Sounds good to me.
What are your thoughts?

 

[ccCapt]

IMO, you would be nuts to run co2 in a ca reactor with using a controller. Unless of course you don't care if you kill everything in your tank when the pH drops.