calibrating refractometer

  1. M

    DIY Refractometer Calibration Fluid help

    New to Reef2Reef, I hope I’m doing this right! I am having salinity issues after being in the hobby for about a year now. My refractometer’s (new and old) are reading wonky. And I have calibrated with 35ppt solution from BRS and AccuraSea, different readings from Both and NOT 35 ppt. I am...
  2. V

    Milwaukee Salinity Tester reading off?

    Just had an issue with my Hanna tester that would not stay calibrated long enough to test my water. Hanna said they’d send me a new one. Well, this turned me off on their products so I bought this Milwaukee MA887 from all the reviews on it and how it NEVER FAILS... I bought it brand new and...
  3. M

    The importance to keep you refractometer calibrated

    It is very simple, but I forgot to do it. After 10 years of my red sea max 130d, reading, testing and learning a lot, I set my 100 gallon tank 70 days ago. Since the beginning I tested a lot... Followed day by day the cycling process, adding fish, corals and etc. I prepared a sump with UV...
  4. LxHowler

    Should I trust my calibration fluid

    I have just bought some brightwell calibration fluid for my refractometer, I use to use acurasea but I couldn't get more of that. With acurasea it said my tank was always at 1.025 salinity but now I have calibrated with brightwell it says I am well under that. This is what it reads with the new...
  5. nanonøkk

    old refractommeter

    ok so i bought a refractometer because i wanna get pinpoint accuracy of my tanks salinity and i have a few questions. ok so first of it’s a fairly old refractometer it looks to be sitting on that shelf for a while will that affect how it works i opened it up and it looks brand new though. also...
  6. WhiskeyCoffee

    Calibrating refractometer

    I just opened up my new refractometer and out of the box it's saying my RO/DI water has 0ppt / 1.0 SG and my tank has 1.027 SG. Should I even bother trying to calibrate this? Some of the Amazon reviews state they took it straight to the LFS to test and theirs were already calibrated...
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