Alkatronic results different from Mastertronic

[CSremo]

Decided to put dKH test (Salifert) on the Mastertronic to check the Alkatronic results periodically.
Here is my first comparison. Waaaay off.
siggestions?

Alkatronic - 8.37
Mastertronic - 12.16

I’ve been using Reef Crystals. So was expecting higher alkalinity.
Recently had trouble with the calibration and had to reset the Alkatronic PH calibration with the help of customer support and that seemed to fix it. Prior to resetting I have had a consistent DKH of 4.85. After resetting it went into the 7s. Which seemed accurate at the time. But now I’m obviously questioning it again.

 

[thatmanMIKEson]

Decided to put dKH test (Salifert) on the Mastertronic to check the Alkatronic results periodically.
Here is my first comparison. Waaaay off.
siggestions?

Alkatronic - 8.37
Mastertronic - 12.16

I’ve been using Reef Crystals. So was expecting higher alkalinity.
Recently had trouble with the calibration and had to reset the Alkatronic PH calibration with the help of customer support and that seemed to fix it. Prior to resetting I have had a consistent DKH of 4.85. After resetting it went into the 7s. Which seemed accurate at the time. But now I’m obviously questioning it again.

Have you checked it with other hand tests, im just curious what the actual or common alkalinity is at.

 

[CSremo]

Have you checked it with other hand tests, im just curious what the actual or common alkalinity is at.

Not yet. I’ve now done several tests in the MT and they are kind of all over the place. Gonna wait till they get resolved. Talking to Eric Tang on email.