New Calcium Reactor Setup - Apex or Dedicated pH Controller?

[milkman55]

I am going to setup a Geo 618 for my 120 gal SPS tank. I was looking at the Deluxe package that includes the ReefFanatic regulator and digital controller.

By going with the package, I am getting the digital controller and pH probe for basically no more money than buying all the parts individulally without the controller. If I order the parts individually and use the Apex for control, I still have to buy a second pH probe for the Apex whereas the package includes one with the ReefFanatic controller.

I have the Apex to control the regulator, but just wondering if using the stand alone pH monitor to control the regulator has any advantages? Anyone use a redundency measure where you hook the standalone controller power supply to the Apex to shutdown everything if the tank pH is out of range? I have also had a few Apex glitches in the past with firmware updates and I would not want that to create an issue with the reactor.

One more question. It comes with a MJ1200 for the feed. Seems like that is too much flow for what you ultimately want for effluent to the sump? Seems like a MJ900 might be more suitable?

 

[Englishmatt]

Tagging along.

I'm in the build phase right now and I plan to hook the CA reactor to my Apex for control when/if PH gets outta line.

Emergency example: PH is 7.8 - shut of off the CA reactor. PH is 8.2 turn on the reactor.

My goal it to tune this thing to get my CA to 420, Alk to 8 and PH to 8.0.

That being said, I have purchased the LAB grade APEX PH probe for the CA reactor to monitor it...

Nos...if they can get the Salinity/conductivity probe to be accurate...I could have the APEX control the RO/DI res and SW res to keep that salinity in check too.

lol...

I literally just want to sit on the couch, drink a beer and enjoy this...