I am about to order a Expansion Box 2 for my mixing station. I need it for my mixing station which is a floor down and roughly 40-50ft over. I need to install a Conductivity and Temp probe. Price wise, its not a whole lot more than when I added a Apex PM2 and sensors. The difference is that I will not need to add any more modules to add onto it. I have enough Level sensor outlets to add leak sensors in case I fall asleep and forget to turn off my RO/DI system...NOT LIKE I DID THAT THIS PAST TUESDAY...:rolleyes:...I am just trying to help in case you do fall asleep.;Facepalm;Hilarious
I would have to add a FMM module and leak sensors to do the same for Apex, you can minus the leak sensors and I will have to do the same for the GHL, but, I will not need to add a second module, aka FMM module, to add the leak sensors as the Expansion Box 2 has 2 Level sensor outputs.
PLUS...If I need to add more sensors and expansion cards down the road for a possible Frag tank, this will make it easier.;)