Hi everyone.
Having an issue with pH probes. I have two permanently installed in the tank. All are Lab Grade Probes. All calibrated with fresh 10.0 and 7.0 after temp adjusting the fluid in the tank. KH 9.3, Cal 446 (both Hanna)
After calibration, my main pH reads 7.57. My other probe is brand new, BRS Lab grade, also calibrated with the same solution at the same time. It reads 7.65
I pulled my CaRx probe and dropped it in the sump for a quick check - it reads 8.13. I don't have any 4.0 fluid to calibrate with. Should I calibrate it with 7/10 for a third check??
Confirmation after calibrating both probes in the fluid is spot on 7.0 and 10.0.
What is going on here??!!
Everything in the tank looks great.
Having an issue with pH probes. I have two permanently installed in the tank. All are Lab Grade Probes. All calibrated with fresh 10.0 and 7.0 after temp adjusting the fluid in the tank. KH 9.3, Cal 446 (both Hanna)
After calibration, my main pH reads 7.57. My other probe is brand new, BRS Lab grade, also calibrated with the same solution at the same time. It reads 7.65
I pulled my CaRx probe and dropped it in the sump for a quick check - it reads 8.13. I don't have any 4.0 fluid to calibrate with. Should I calibrate it with 7/10 for a third check??
Confirmation after calibrating both probes in the fluid is spot on 7.0 and 10.0.
What is going on here??!!
Everything in the tank looks great.