I have 2 tanks. I noticed that the pH was staying steady at 8.17 on my reef tank which I know isn't right. The probes are old 4-5 years so I know they are outside the normal lifespan, but they seem to read correctly up until now so I never worried too much about it.
I figured I would calibrate them because I haven't done it for some time. I had a PITA time calibrating the reef tank probe because the reading was not changing in the different calibration pouches. I figured the probe was just dead.
On my FOWLER, the probe read 8.2 in the 7.0 solution and 10 in the 10 solution. This put the tank water reading at 7.3 pH which I know isn't correct. It was reading 8-8.2 before.
I bought 2 probes on Amazon. I got gel filled Milwaukee double junction probes (I bought good ones so I thought). I got the new probes in yesterday.
I still couldn't calibrate the reef tank. I figured out that the PM1 was bad so I swapped it out for a spare I had. I am still not happy with the calibration results. The probe reads around 750 in the 7.0 and 1060 in the 10. It puts the pH around 7.8.
The fowler is worse, the new probe reads like 820 in the 7.0!
Either way, the Milwaukee probes are going back and I bought the BRS double junction probes which I had in my FOWLER for the last 4-5 years without a problem.
Do I need to reset the PM1 somehow? And I confirmed that they are reading incorrectly by doing a manual dropper test.
I figured I would calibrate them because I haven't done it for some time. I had a PITA time calibrating the reef tank probe because the reading was not changing in the different calibration pouches. I figured the probe was just dead.
On my FOWLER, the probe read 8.2 in the 7.0 solution and 10 in the 10 solution. This put the tank water reading at 7.3 pH which I know isn't correct. It was reading 8-8.2 before.
I bought 2 probes on Amazon. I got gel filled Milwaukee double junction probes (I bought good ones so I thought). I got the new probes in yesterday.
I still couldn't calibrate the reef tank. I figured out that the PM1 was bad so I swapped it out for a spare I had. I am still not happy with the calibration results. The probe reads around 750 in the 7.0 and 1060 in the 10. It puts the pH around 7.8.
The fowler is worse, the new probe reads like 820 in the 7.0!
Either way, the Milwaukee probes are going back and I bought the BRS double junction probes which I had in my FOWLER for the last 4-5 years without a problem.
Do I need to reset the PM1 somehow? And I confirmed that they are reading incorrectly by doing a manual dropper test.