Changing ph

Discussion in 'Water Chemistry' started by toolmanbmw, Jan 31, 2012.

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  1. toolmanbmw

    toolmanbmw Plankton

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    Hi all

    Is it normal for my tank ph to change by 0.65 within 24 hours? The ph peaks durning the day at 8.55 than gets to 7.90 during the night.
     
    toolmanbmw, Jan 31, 2012
    toolmanbmw, Jan 31, 2012
    #1

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  2. coylee_17

    coylee_17 Fire Goby

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    Yep completely normal, pH will be highest at lights off and lowest in the morning before the lights come on.
     
    coylee_17, Jan 31, 2012
    coylee_17, Jan 31, 2012
    #2
  3. Peredhil

    Peredhil Giant Squid

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    my pH ranges from 8.1-8.3 from morning to night.

    Your range sounds a bit much to me. I'd be curious about when you dose Alk supplements, if you have a light on your refugium, etc.

    (I dose Alk at midnight and don't have a refugium so my tank doesn't "breathe" in that sense).
     
    Peredhil, Jan 31, 2012
    Peredhil, Jan 31, 2012
    #3
  4. toolmanbmw

    toolmanbmw Plankton

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    No dousing at all.... I do have a compact bulb in my sump with some macro. The light comes on when my main lights turn off. I find the swing to be pretty big also... But things seems to be fine in the tank.
     
    toolmanbmw, Jan 31, 2012
    toolmanbmw, Jan 31, 2012
    #4
  5. coylee_17

    coylee_17 Fire Goby

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    Oh, in that cause, it should help to stabilize the pH. Not sure what could be causing the swing. What time of day are you doing you tests?
     
    coylee_17, Jan 31, 2012
    coylee_17, Jan 31, 2012
    #5
  6. toolmanbmw

    toolmanbmw Plankton

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    It's from my apex controller. I see that swing everyday.
     
    toolmanbmw, Jan 31, 2012
    toolmanbmw, Jan 31, 2012
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  7. leighton1245

    leighton1245 Horrid Stonefish

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    Just to help cover all the basis what size of tank, fuge and what do you have for wave makers?

    What is your S.G, Ca, and Mag at?
     
    leighton1245, Jan 31, 2012
    leighton1245, Jan 31, 2012
    #7
  8. exactlyobp

    exactlyobp Giant Squid

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    Mine is like this:
    [​IMG]
    Id like the swing to be a bit less drastic, but I think its normal?
     
    exactlyobp, Jan 31, 2012
    exactlyobp, Jan 31, 2012
    #8
  9. leighton1245

    leighton1245 Horrid Stonefish

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    Now that is pretty sweet! what app?
     
    leighton1245, Jan 31, 2012
    leighton1245, Jan 31, 2012
    #9
  10. exactlyobp

    exactlyobp Giant Squid

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    Its from Neptune Systems :) I love it.
     
    exactlyobp, Jan 31, 2012
    exactlyobp, Jan 31, 2012
    #10
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