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Ok just upgraded my ph and orp sensors. I decided to check my apex probes with a another type of probe.
SensorEx is the brand. The thing I like is that I can calibrate the orp probe. That was something i couldn't do with the apex. Now. That I'm running ozone, I need to know my orp with in 20 mv's.
Here are some pics
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The larger probes are the new ones
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Here are the monitors.
SensorEx is the brand. The thing I like is that I can calibrate the orp probe. That was something i couldn't do with the apex. Now. That I'm running ozone, I need to know my orp with in 20 mv's.
Here are some pics

The larger probes are the new ones

Here are the monitors.