What's up with my new Milwaukee pH probe

[ZoWhat]

Milwaukee MA911B/2 pH Electrode/Probe/Sensor

The MA911B/2 probe is lab grade, gel-filled pH probe for use with Milwaukee Monitors and Controllers. DESIGN FEATURES Top features include: DOUBLE JUNCTION The double junction junction design reduces the risk of clogging. SPHERICAL GLASS TIP The sperical glass tip provide...

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Calibrated to my Apex using 4.0 low and 10.0 high fluid... yet it's reeeeeeally slow to read pH

Ever since it's acclimation, it's been floating around 8.0 to 8.1 in sloooow increments. I'm use to seeing a spread of 0.3 btwn dark and light cycles

 

[Cory]

Most probes should be calibrated at the ph range our tanks operate at. Ph 7 and 10.

 

[ZoWhat]

I thought to calibrate using 4 and 10 to refine the 7s and 8s

?

 

[Garf]

I thought to calibrate using 4 and 10 to refine the 7s and 8s

?

Nah, that just increases the window for error.

 

[ZoWhat]

Oh. Oops