Apex LLS fluctuation

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Has anyone else noticed unexplained fluctuations from their LLS. For some reason mine has shown water being added to and then drained from my RODI reservoir. The only possible backflow into the reservoir would be from the 1/4" tubing running from the pmup up to the top of the sump where there is an air gap so it can't siphon back out of the sump. Total distance of said tubing is about two feet from the bottom of the reservoir to top of the sump. The reservoir has a cross section of about 185 sq. inches. The graph shows the water level rising 1.45 inches, then going back down again. 1.45 inches X 185 sq. inches = 268.25 cu. inches = 1.161255 gallons. There is no way that little bit of tubing is holding that much water. On the graph you can see that the trace for the ATK is in the off position during this entire time.
07-30-2023 LL 3.65e.jpg

07-30-2023 LL 5.1e.jpg

The only thing I could think of is if condensation drips are throwing it off.:thinking-face: I have calibrated it several times and has been pretty accurate. Any other ideas?
 
I ended up turning mine off due to obscene amount of alerts due to fluctuations. I figured it was just my return pump that has been due for replacement for some time causing inconsistent flow/levels but possibly the sensor itself.
 

HOW MUCH DOES A FISH’S FEEDING REQUIREMENTS AFFECT YOUR STOCKING DECISIONS?

  • A lot! - I avoid fish that require frequent or specialized feeding

    Votes: 6 31.6%
  • Quite a bit, but an automatic feeder can change my answer

    Votes: 4 21.1%
  • It depends on whether my nutrient export can handle it

    Votes: 3 15.8%
  • It depends on how badly I want the fish

    Votes: 5 26.3%
  • Not much. I’m willing to adjust my routine

    Votes: 4 21.1%
  • Not at all. Feeding demands don’t limit my stocking choices

    Votes: 4 21.1%
  • I usually learn about the demanding feeding schedule after buying the fish!

    Votes: 1 5.3%
  • I haven’t really considered this before

    Votes: 0 0.0%
  • Something else (see my comments in the thread)

    Votes: 0 0.0%
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