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difference between pH and ORP monitors

1399 Views 4 Replies 2 Participants Last post by  jrs, 
jrs
What is the difference between a pH monitor and an ORP monitor? Is one better than the other and can either be used for regulating CO2 levels?
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E
pH = levels of hydrogen ions (hydroxide ions too, I guess) in the water.
ORP = oxidization-reduction potential. Measurement of the water's ability to oxidize contaminants/toxicities.

To control CO2, use a pH controller.
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jrs
I was reading on a salty forum that they use ORP for regulation of ozone injection. I know a person that has offered me a pinpoint ORP monitor for a really good price.

Are you saying that these can't be used for CO2 then?
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E
No, they cannot be used for CO2 injection.
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jrs
Oh well. Thanks for the info
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