Hey guys any help with this would be greatly appreciated. I bought this along with my P4 mega set awhile back and have pretty much finished my tank build. I’ve set everything thing up and haven’t had an issue with anything until I got to calibrating the Ph probe for the KH Director. When I select calibrate probe and put it in solution it just reads 0. Always reads 0 weather it’s in ph4, ph7, or RO water. I bought a new probe thinking maybe it had dried out possibly, attached new one this evening and same result. I’ve reset unit and tried again, I’ve tried running a test and it just shows a Kh of 0. I also attached both probes to my P4 and got readings from both so I’m now thinking there’s nothing wrong with the probes and maybe the unit itself? Had anyone experienced this?