Profilux II plus aquarium controller

[mshur]

I am trying to program my controller without my new tank . i use to have AQ and this is something new for me, i hope i will not sound silly
i got a seconf PH module to control my CA RX. In my old AQ I use to have settings :
If PH<6.4 then CO2 ON
If PH>6,5 then CO2 OFF
How can I program something like this in Profilux?

thankx,Mike