QuoteReplyTopic: ORP Posted: March 27 2005 at 12:30am
What is the max ORP should be at? Mine is reading around 380. I have cleaned the probe and I am just curious if my neptune is giving false ORP readings or if it is accurate.
I am not running an ozone. What other factors contribute to ORP? Thanks
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Without ozone a reading that high is darn near impossible, IMO. Pristine ocean reefs are at those kinds of ORP values. A healthy aquarium without ozone should be between 200 and 300.
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