Out of curiosity can the pH proven be thrown off by a magnet? The reason I ask is I put a new apex in one of my tanks, calibrated etc. Probe was reading around the 7.8 for a few hours. Decided to put in an optical sensor for a low level warning and I believe it “clung” to the probe. Possible that it was instead clinging to the probe holder. I noticed when this happened that the reading dropped to around 6.7-6.8 and did not recover. I recalibrated it and it was back at 7.77- 7.8. Tonight I shut the skimmer off to empty and clean the cup and noticed when I shut it off it dropped down again to that 6.8 range the second the skimmer shut off. The probe is located in a the return chamber though.
Apex pH probe
- Thread starter jgSk
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Silly clownfish
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I would not think magnetic probe holders would be so popular if magnets could mess up the probe. Also, from a chemistry/physics perspective I don’t see a magnet interfering. But maybe if the magnet snapped to it the impact damaged the probe?
Randy Holmes-Farley
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My Tank Thread
A magnet will have no effect on pH measurement. Electric cords near the pH probe cord or meter can sometimes cause issues from electrical interference.
jgSk
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As far as the magnet goes, is snapped onto the probe when I went to put the optical in. Was thinking it may have damaged it. Cords may have been the issue though. I moved my Red Sea ATO cables, return pump cable and the next reading was a straight vertical line.
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