Reef Chemistry - PH Probe Problem

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PH Probe Problem

Printed From: Utah Reefs
Category: Specialized Discussion
Forum Name: Reef Chemistry
Forum Description: A place to discuss reef chemistry.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=56474
Printed Date: July 30 2026 at 5:16pm
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Topic: PH Probe Problem

Posted By: Jeffatpm
Subject: PH Probe Problem
Date Posted: May 15 2012 at 1:42pm

I'm having trouble calibrating my ph probe and need some help.

The ph in my tank has been a bit high and causing my apex alarm to go off, Everything was looking great and happy so wasn't too worried, tested alk and calc and was within acceptable tolerances.

I figured my ph probe had started reading incorrect and needed calibration.

I got 7 and 10ph caliberation packets. I've done it a few times and still seems to be off. I even timed it to sit in one packet for two min and then the other for two min.

PH shows 7.94 when I do a ph test kit shows ~8.2. The probe is about 2 years old.

Thoughts suggestions?

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210 Reef with loads of LEDS
Large Fishey Room
Located Near Jordan Landing in West Jordan.

Replies:

Posted By: 96slowbra
Date Posted: May 15 2012 at 6:47pm

either their site or reefgeek's site says probes are only good for a year or two , and calibrations are needed around every 6 months....

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105 rimless

Posted By: Jeffatpm
Date Posted: May 15 2012 at 8:01pm

ugh I was afraid of that.

Has anyone heard of a proper calibration procedure, how long to leave in each solution?

-------------
210 Reef with loads of LEDS
Large Fishey Room
Located Near Jordan Landing in West Jordan.

Posted By: 96slowbra
Date Posted: May 16 2012 at 11:02am

just until it stops moving. i just calibrated mine, seemed like the whole process took about 2 min

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105 rimless

Posted By: Jeffatpm
Date Posted: May 16 2012 at 1:32pm

Mine kept moving after the two min it was in one solution.

-------------
210 Reef with loads of LEDS
Large Fishey Room
Located Near Jordan Landing in West Jordan.