Poll: How Do You Test Salinity?

Discussion in 'Reef Aquarium Discussion' started by dbl, Nov 2, 2017.

?
  1. Hydrometer

    63 vote(s)
    10.1%
  2. Refractometer - Manual

    449 vote(s)
    72.1%
  3. Refractometer - Digital

    95 vote(s)
    15.2%
  4. Salinity/Conductivity Monitor

    16 vote(s)
    2.6%
  5. Salinity Probe on Controller

    88 vote(s)
    14.1%
  6. Other

    1 vote(s)
    0.2%
  7. I Don't Test/Monitor Salinity

    6 vote(s)
    1.0%
Multiple votes are allowed.
  1. dbl

    dbl It Takes Less Energy to be Nice Staff Member Team R2R R2R Supporter R2R Excellence Award Reef Squad Leader Build Thread Contributor Article Contributor Partner Member 2018

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    No arguing the importance of maintaining correct and consistent salinity in our systems and there are several ways of testing. Curious what methods most folks use. Do you still rely on the old school hydrometer, or do you let your controller do the work for you?
     
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  2. DSC reef

    DSC reef Coral wasted R2R Supporter R2R Excellence Award Reef Squad Build Thread Contributor

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    Red sea refractometer, calibrate with solution before every test.
     
  3. Water Dog

    Water Dog Valuable Member

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    Milwaukee digital with an Apex PM2 to keep an eye on daily trends or any out of the ordinary swings.
     
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  4. JoeIII

    JoeIII Well-Known Member R2R Supporter

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    I use a hydrometer when I test salinity.

    I also marked "I don't test/monitor" because I have probably tested salinity in my DT 3x in the last year.
     
  5. mtamorrow

    mtamorrow still learning, still confused R2R Supporter Build Thread Contributor

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    Ditto
     
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  6. Mr. Bill

    Mr. Bill Active Member

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    Lab-grade floating glass hydrometer (NOT the cheap kind from Petco).
     
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  7. ihavecrabs

    ihavecrabs Well-Known Member R2R Supporter R2R Excellence Award Build Thread Contributor Article Contributor Partner Member 2018

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    Digital refractometer after calibrating the unit before each use.
     
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  8. Labridaedicted

    Labridaedicted Wrassetastic R2R Supporter Build Thread Contributor Partner Member 2018

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    I have an American marine pinpoint salinity meter. I plug it in for monitoring the tank, but then its battery powered so i can test the other tanks and mixing reservoirs easily as well. I also have a refractometer that I use Occassionally to double check accuracy
     
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  9. marktea

    marktea Active Member

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    Refractometer. My hydrometer had me at 1.33 instead of the displayed 1.025 I was going for
     
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  10. Kman237

    Kman237 Active Member R2R Supporter Build Thread Contributor Partner Member 2018

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    Refractometer - Manual all the way!
     
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  11. smokin'reefer

    smokin'reefer Valuable Member R2R Supporter Partner Member 2018

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    Taste, also have a Red Sea Refractometer and Apex probe just in case.
     
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  12. DSC reef

    DSC reef Coral wasted R2R Supporter R2R Excellence Award Reef Squad Build Thread Contributor

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    Still using that @Mr. Bill If it's not broke right!
     
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  13. Mr. Bill

    Mr. Bill Active Member

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    Absolutely, yes. If it's still good enough for scientists, it's good enough for me (plus no calibration required). ;)
     
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  14. dragon99

    dragon99 Valuable Member Build Thread Contributor Partner Member 2018

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    Need more than 2 votes, I use 3 methods
    Cond probe via Apex on the DT
    Refract manual and Refrac digital for water changes and to spot check tank.

    I primarily use the Milwaukee when making water, then check it against the manual refractometer. I check the manual and digital against the DT (probe) before each WC.
     
  15. GoVols

    GoVols VFL R2R Supporter R2R Excellence Award MTRCMember Build Thread Contributor Article Contributor Partner Member 2018

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    Bought the
    Vee Gee Scientific STX-3 (Refractometer)
    when it was on sale and love this thing :)

    Regards, GoVols
     
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  16. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    I like conductivity. Fast and easy, easy to calibrate or check calibration, and some devices read temp and conductivity in real time making them perfect for acclimation.

    They can also be used to monitor limewater potency, which is otherwise hard to do with sufficient accuracy to be useful.

    Mine could also be used to measure RO/DI purity, but not all have the dynamic range to read seawater and RO/ DI.
     
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  17. reefwiser

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

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    I use all of the above but can only vote for two.:) Its always good to check things different ways you never know when one testing method could trip you up. :)
     
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  18. Christopher B Keyes

    Christopher B Keyes Member

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    I have always went old school with the hydrometer but, I recently calibrated it with solution and found it to be way off. I am still using it however with the new marks added. Someday I would love to afford one of those newfangled refractometers! Just too much money going to corals!!
     
  19. Christopher B Keyes

    Christopher B Keyes Member

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    Too busy reefing!
     
  20. Sleepydoc

    Sleepydoc Active Member

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    I have a conductivity probe on my Apex but honestly have found it to be too inconsistent, so I just use my refractometer with calibration solution that I got when I set up my tank.
     
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