co2 tank, pH controller, regulator, media
5lb CO2 tank
Milwaukee Regulator w/ bubble counter
Milwaukee pH controller
ARM Calcium Reactor Media
ZeoMag Magnesium Reactor Media

Still working on dialing it in. I guess it will be easier when I have more calcium use in the tank.

I use an AquaController Jr to monitor the pH in the tank. The Milwaukee is tied into an event off the AquaController so if the pH of the tank is out of whack it shuts down the reactor (safety). The Milwaukee pH controller monitors the effluent coming out of the reactor and regulates the CO2 use.