Why is my condx reading effected by my leds not even close to each other

Discussion in 'Neptune Systems' started by jason2459, Jun 7, 2016.

  1. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    Simply what that title says. Why? This just started happening the past week.

    My display tank is on my first floor.

    My sump is in the basement.

    I have two EB8s for the tank on the first floor that each has my LEDs and T5s plugged into.

    I have two EB8s in the basement 12 feet away. My PM2 is connected to one of those with the salinity and temp probe in the sump.

    My condx reading has been dropping drastically on a daily bases. I finally got around pin pointing the event with when my white led channel turns on.

    Why?

    [​IMG]
     
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  2. hybridazn

    hybridazn Acro killer..... Staff Member Team R2R R2R Supporter R2R Excellence Award Photo of the Month Award PMAS Member Showcase Editor Build Thread Contributor Partner Member 2018

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    @Terence could possibly have an idea why
     
  3. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    It's possibly related to some kind of improper grounding but I haven't found it yet.
     
  4. dcmartinpc

    dcmartinpc Well-Known Member R2R Supporter Build Thread Contributor Partner Member 2018

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    I have the exact same problem with my T5s. Identical. It's vey frustrating.

    Don
     
  5. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    you're right. I just added some T5s recently too. I just turned off my T5s a d the condx started reading right again.

    What's up with that?

    [​IMG]
     
    Last edited by a moderator: Jun 9, 2016
  6. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    The T5s go on and off very close to the same time as the white led channel so I thought it was those but its most definitely the T5s.


    Showing me turning them off and back on again tonight.
    [​IMG]


    Over time
    [​IMG]
     
  7. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    The T5s go on and off very close to the same time as the white led channel so I thought it was those but its most definitely the T5s.


    Showing me turning them off and back on again tonight.
    [​IMG]


    Over time
    [​IMG]
     
  8. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    Finally fixed the issue. I tried different surge protectors, outlets, circuits, emf filters, placement, wrapping in foil (yes I tried this), energy bars, and many combinations of each.

    I replaced the ballast and issue resolved. Crazy. They aren't even close to each other and on totally different circuits.
     
  9. anit77

    anit77 Well-Known Member

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    Hey Jason, which ballast MFG did you use when you replaced them?
    I have a LET 60" kit that I'm using and I've been seeing the same issue.
     
  10. jason2459

    jason2459 Not a paid scientist R2R Supporter R2R Excellence Award

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    I think it was a LET too. It was the retro kit from BRS. I replaced with a Hamilton V series t5
     
    Last edited: Oct 13, 2017
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