Question about MC122 PH Controller

[tgwebb4170]

Going to be setting up my reactor this weekend on my tank and I understand everything except the PH controller which seems fairly easy to set up but has a "above or below" button. I am kind of confused as to where to set this as from my understanding the ARM media seems to dissolve best at 6.5. I was planning on setting it at 6.5 so would I want the switch "controller on when above or below"?

Professional pH Controller - MC122 : Milwaukee Instruments

 

[nanoreefer22]

You'd want to set it to "When above" 6.5. When the pH in the reactor is above 6.5 the solenoid will open and let CO2 flow

I've got the same controller.

Is the reactor dual chamber or single? And where is the pH probe located? (in the effluent, first chamber, second chamber, etc?)

Thanks,
Kris

 

[tgwebb4170]

You'd want to set it to "When above" 6.5. When the pH in the reactor is above 6.5 the solenoid will open and let CO2 flow

I've got the same controller.

Is the reactor dual chamber or single? And where is the pH probe located? (in the effluent, first chamber, second chamber, etc?)

Thanks,
Kris

Its a single geo 618. It has a built in PH probe which is a main reason I bought it.

 

[nanoreefer22]

Awesome! Should be perfect then.