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Mark Peterson 
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 Topic: ORP / Redox too high?
Posted: May 22 2006 at 8:32am |
What would be too high?
Would 513 be too high?
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jfinch
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Posted: May 22 2006 at 9:11am |
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Too high.
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tileman
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Posted: May 22 2006 at 3:29pm |
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Definately too high. Anything above 450 is too high. My set point is at 400.
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Mark Peterson
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Posted: May 23 2006 at 1:44am |
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What is wrong with it being this high?
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jfinch
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Posted: May 23 2006 at 10:25am |
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We use ORP here at work to control biological life in our cooling water systems. At ~650-700 everything is dead. 500 - 650 is also lethal to most biology but it takes time (a few hours). Pristine ocean reefs are ~400 - 425.
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Posted: May 24 2006 at 11:44am |
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What would be too low?
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Mark Peterson
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Posted: May 24 2006 at 9:24pm |
What if it gets this high on it's own without O3,
or even with just 25 mg/l in a 120 gal tank?
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jfinch
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Posted: May 24 2006 at 11:07pm |
It won't get that high on it's own. It will need an oxidizer to get that high. If you're getting reading like that, I'd say the meter is suspect.
Amie, too low is much more subjective. I'm really shooting from the hip but I'd say somewhere in the low 200s to upper 100s might be low enough to warrent investigation into your filtering/feeding/general husbandry habits.
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Bryguy514
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Posted: October 31 2006 at 10:21am |
I know this is a old post but my tank also reads about 500 without Ozone and just wondering how people clean there probes or does OEP need to be calibrated.
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tileman
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Posted: October 31 2006 at 11:40am |
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Clean your probe with a 50 /50 water , vinegar solution. Let it soak for an hour and then use a soft toothbrush to brush it clean. Then recheck your orp.
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335G Reef
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bbeck4x4
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Posted: October 31 2006 at 4:07pm |
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their also is a breakin for new probes I belive that it is near two days,
a lot of probes/displays are out of calibration also that could show a high number.
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