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Ph calibration issues

Discussion in 'Digital Aquatics' started by Miah2bzy, Sep 17, 2015.

  1. Miah2bzy

    Miah2bzy Barracuda M.A.S.C Club Member

    I have tried both the calibration fluid that came with my rkl and brs calibration fluid (Milwaukee). Both times I can't get the probe to calibrate correctly, on both the 10 and 4 buffers I get the same numbers. Rinse the probe in rodi both times, etc, and when I finish calibrating it reads my tank as being 42 for ph. what am I missing?
     
  2. tomtom2245

    tomtom2245 Amphipod M.A.S.C Club Member

    You are using both solutions to calibrate right? You have to set a calibration point using the 10 and then another using the 4. You can't just set both points off of one solution. I'll admit I made that mistake once and was scratching my head for awhile.
     
  3. Miah2bzy

    Miah2bzy Barracuda M.A.S.C Club Member

    I used them each separately. Was saying I've used two different brands of calibration fluids and neither has worked right. I let the probe sit for 10 min in the fluid, packet is clipped to side of sump to keep temp the same, enter in the value for the buffer, wait until it settles into a range on the head unit then hit enter and repeat with the other solution.
     
  4. Balz3352

    Balz3352 Marlin M.A.S.C Club Member

    How old is the probe?
     
  5. Miah2bzy

    Miah2bzy Barracuda M.A.S.C Club Member

    It was out of box 1 month ago and tied to set it up then before baby...just getting to it again today.

    Oddly enough it's now reading my tank at 8.4ish. Has gone down all day today from where it started.
     
  6. Walter White

    Walter White Marlin M.A.S.C Club Member

    Did you let it dry out after taking it out a month ago? If so that might be the issue. Also the pH probes that come with the reef keeper suck anyway. I have yet to have one that was accurate. Personally I think measuring pH is way overrated anyway. As long as calcium, Magnesium and alkalinity are all in check the pH will take care of itself.
    Just my 2 cents
     
  7. Miah2bzy

    Miah2bzy Barracuda M.A.S.C Club Member

    I left it in tank. I had a bum temp probe, probably have a bum ph probe as well. :(
     
  8. Balz3352

    Balz3352 Marlin M.A.S.C Club Member

    Let it settle I've heard sometimes they need a little bit to settle in. See if it becomes more consistent.
     
  9. Haddonisreef

    Haddonisreef Kraken M.A.S.C Club Member

    Did u change the rk setting from 4 to ten when u switched fluids?
     
  10. Miah2bzy

    Miah2bzy Barracuda M.A.S.C Club Member

    Yup. Called customer service and they're stumped as well as I did everything right. They said to leave it in the calibration fluid for a few hrs and see if that works.
     
  11. Haddonisreef

    Haddonisreef Kraken M.A.S.C Club Member

    Hmm could it be the head unit of rk?
     

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