Jim Tansey Well-Known Member BRS Member Nov 21, 2016 #21 I had a display tank pH probe for a Co2 shut off but not intended as a control function but just as an emergency in case the Co2 flow went out of control and dropped the display to dangerous levels. Jim
I had a display tank pH probe for a Co2 shut off but not intended as a control function but just as an emergency in case the Co2 flow went out of control and dropped the display to dangerous levels. Jim