ORP Controller with a Sulphur Denitrator?

[reef_enthusiast]

Has anyone here used an ORP controller with a sulphur denitrator? If so, which model are you using?

I have been looking into the Milwaukee ORP Controller or the Pinpoint ORP Controller.

The only issue I see is I believe the set points are only from 0 to some positive number. For the sulphur denitrator, I want to keep the ORP between -100mV and -250mV.

Thanks for the help in advance...

 

[Lewy]

I was in the exact same position as you a few months ago.

If the model you are after only shows a positive value. You can reverse the wires on the probe to show negative values.

Was considering the Pinpoint. But is way overpriced for what it does.

So I ended up spending a but extra on a Profilux computer setup and have not looked back.