I am not sure if I am posting this question in the right place or not. If not, please feel free to move it.
I am changing my grow room to a closed air Co2 grow room using Co2 tanks. I need to purchase a Co2 controller but there is not enough reviews to make a decision on which one to get. I am trying to decide between the Sentinel CHHC-4i and the Autopilot Master controller. Any help would be appreciated.