Reasonably priced PH meter?

[dkeller_nc]

My Neptune ph meter is reading 10.3 after calibration should I worry, alk is 9. I Oder a new lab grade probe the old probe is more than 2 years old

No; a pH of 10.3 is impossible in normal seawater. I'd do nothing until you get your new probe and calibration solutions.

 

[tmz]

If the 10.0 calibration solution reads 10.3; it's not preicisley calibrated .What does the 7.0 solution read? An older probe or a dirty probe may bot calibrate well.

 

[10reefman]

thanks, I'll wait for the new probe and see what happens.

 

[10reefman]

I got the new ph probe $ 70 last night after calibration it's now reading 8.3

 

[bertoni]

8.3 is reasonable, in my opinion, for a reef tank. What was the level measured with the previous probe? Or was the 10.3 for the tank?