Neptune Conductivity Probe - Weird Behavior

Discussion in 'Aquarium Controllers' started by MaddyP, Sep 7, 2017.

  1. MaddyP

    MaddyP 'Til Reefdom Come... R2R Supporter SCMAS Member Build Thread Contributor Partner Member 2018

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    Has anyone experienced something like this? It seems the probe is slowly dropping to a point them spiking back to normal. Nothing odd going on with the tank, ATO is working as expected. These spikes don't correlate with any of the other equipment operating.

    #apexusers

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  2. jonmos75

    jonmos75 Well-Known Member Platinum Sponsor

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    Looks like micro-bubble are collecting in the prob causing the numbers to drop. When the air bubble escapes out one of the two holes on the side of the conductivity probe and once the air bubble leaves the salinity reading goes back to the normal range.
     
  3. reefwiser

    reefwiser LMAS R2R Supporter R2R Excellence Award Reef Squad Article Contributor Partner Member 2018

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    Yes water bubbles collecting on the probe can cause it.
     
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  4. httorihanzo

    httorihanzo Well-Known Member

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    Hum.. I am wondering if putting my probe holding in my drain/skimmer section of my new build might be a bad idea because of this. It makes sense that the bubbles would skew the readings.
     
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  5. reefwiser

    reefwiser LMAS R2R Supporter R2R Excellence Award Reef Squad Article Contributor Partner Member 2018

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    Oh yes water turbulence is a bad spot for any probe. The water is changing too much do to the flow a smooth even flow is the best.
     
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  6. Salty1962

    Salty1962 Wrasse and SPS Lover R2R Supporter R2R Excellence Award Reef Squad Build Thread Contributor Partner Member 2018

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    I take mine and shack it every week or when it starts recording weird. I have it on the up slope of a baffle.
     
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  7. MaddyP

    MaddyP 'Til Reefdom Come... R2R Supporter SCMAS Member Build Thread Contributor Partner Member 2018

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    I hadn't even considered this. Probe has read within normal range for nearly two months, then this started out of nowhere.
     
  8. zachxlutz

    zachxlutz 120 Gallons of FUN R2R Supporter Build Thread Contributor Partner Member 2018

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    Mine does this slowly over time too. I've found shaking the probe under water releases the bubbles and gets me back to reading accurately.
     
  9. MaddyP

    MaddyP 'Til Reefdom Come... R2R Supporter SCMAS Member Build Thread Contributor Partner Member 2018

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    Well, I think I'll need to reconfigure mine. I'm not for having to shake it every day. :p
     
  10. reefwiser

    reefwiser LMAS R2R Supporter R2R Excellence Award Reef Squad Article Contributor Partner Member 2018

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  11. MaddyP

    MaddyP 'Til Reefdom Come... R2R Supporter SCMAS Member Build Thread Contributor Partner Member 2018

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    Ooo...I kinda like that! I think I'll incorporate this when I replumb the tank. Seems a solid idea both for maintenance and minimization of interference.
     
  12. reefwiser

    reefwiser LMAS R2R Supporter R2R Excellence Award Reef Squad Article Contributor Partner Member 2018

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    I use this kind of probe holder at work and home.:)
     
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