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08-22-2001, 05:50 PM
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#1 |
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Citizen
Join Date: Feb 2001
Location: greenfield in usa
Posts: 206
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opr ?
my opr is reading 470 and i read in robert fenners book that it shouldn't be above 400 i think? what can i do to bring it down
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08-22-2001, 06:00 PM
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#2 |
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Moderator
Join Date: Jun 2000
Location: Louisiana
Posts: 20,691
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Point of clarification:
I believe that clown-t means to say that his ORP is 470 mV. Right? Ninong 
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Ninong |
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08-22-2001, 06:09 PM
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#3 |
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Citizen
Join Date: Feb 2001
Location: greenfield in usa
Posts: 206
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yes, the reading is from my neptune controller.
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08-22-2001, 06:12 PM
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#4 |
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Moderator
Join Date: Mar 2000
Location: Forney Texas USA
Posts: 2,304
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clown-t,
ORP readings are on of those parameters that you should interpret with a great deal of “fudge factor” 1 OPR probes are notoriously inaccurate. Put 3 different probes into the same water, with the same meter, and you will often get 3 substantially different readings. Calibrating them is even more “problematic” 2 Unless you are using ozone or some other “artificial” ORP booster, ORP will not rise to “unsafe levels” So ORP is really only useful in indicating “trends” i.e. a sudden drop in ORP is indicative of something dead/decaying. ORP is one of those parameters that I don’t bother to buy new probes for my Aquacontroller anymore. Regards, Scott
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Founding Member – Rocky Mountain Reef Club You can see my former reeftank at http://www.sdpasse.com |
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08-22-2001, 06:27 PM
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#5 |
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Citizen
Join Date: Feb 2001
Location: greenfield in usa
Posts: 206
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thanks for the info good to know!
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