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03/25/2015, 02:25 PM
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#1 |
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Grizzled & Cynical
 Join Date: Apr 2006
Location: Stamford, CT
Posts: 17,319
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ORP Probes
Although I have generally thought of ORP as sort of useless, I figured wth since I had a port on my Apex. So, last year got a probe and hooked it up. It took a long time to come up to what I thought to be a good measure (350 plus; two weeks). I recently had it plunge down below 200, for reasons unclear other than a dirty probe. Cleaned the probe and back to 300 ish, but again it is a crawl back up to level.
Is this normal for ORP - that it takes long time for the measurement to 'settle'? And if so, should I expect it after a cleaning as well?
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Simon Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones! Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs |
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03/25/2015, 03:42 PM
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#2 |
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Registered Member
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 10,344
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I usually give my probe about 24 hours to adjust.
But once it's been in the sump for a week or so it starts getting dirty and the number slowly starts to climb. Then I clean it and it drops way down and then levels out over the next 8-24 hours. Repeat.
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-dennis Elos Diamond 120xl | Elos Stand | Radion G4 Pros | GHL Profilux Controller | LifeReef Skimmer | LifeReef Sump Photos taken with a Nikon D750 or Leica M. |
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03/26/2015, 11:45 PM
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#3 |
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VP, SDMAS
Join Date: Nov 2006
Location: Sunny San Diego, CA
Posts: 1,309
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I have always seen ORP probes take longer to settle in than other probes. I have no idea why though.
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Dave My 130g tank: http://www.reefcentral.com/forums/showthread.php?t=2387989 Current Tank Info: 130g build in progress |
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