High PH

Discussion in 'Water Parameters and Additives' started by Esmond, 11 Mar 2013.

  1. Esmond

    Esmond

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    Morning, my ph has always been between 8 and 8.4(24hrs) yesterday it peaked at 8.7 in the afternoon at first i thought a faulty probe which i recalibrated and got the same reading ,this morning it was sitting at 8.49.Nothing has changed much just that i started dosing ozing(2 days ago) which i stopped ,because of the high ph.I have also been using the orca cubes for about a month and a half now.My kh is at 8ppm which i tested on wednesday.

    Livestock consist of 14 fish(small to medium) and a few snails,shrimps and starfsh.Any ideas?
     
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  3. 459b

    459b Moderator

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    What are you dosing?
     
  4. butcherman

    butcherman Moderator

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    dosing Kalk?
     
  5. Visser

    Visser

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    It couldnt have been the bio-cubes.
    Are you pumping the ozone into your skimmer or do you have a ozone reactor?
    What are you dosing to keep your alk & calcium on par? (anything?)
    Do you have a fan blowing over/onto the sump/tank?
     
  6. OP
    Esmond

    Esmond

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    dosing kh,mg,ca(all seachem) and trace elements.
     
  7. OP
    Esmond

    Esmond

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    No
     
  8. OP
    Esmond

    Esmond

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    yes pumping the ozone via an airpump into the skimmer.Dosind seachem kh,mg and ca.Yes i have a fan blowing over the tank.
     
  9. OP
    Esmond

    Esmond

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    I have been using the same method on my previous tanks and never had any issues ohhh then again i never tested my ph,been only doing it for the 3 months.
     
  10. Visser

    Visser

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    Try running your fan on a timer for only the hottest time of the day... (11 - 3 oclock). This will cause a bit of increase in dissolved CO2 which causes your water to have a lower ph.

    In my personal opinion. Having a high ph isn't such a bad thing. It wont affect any livestock. Only when your ph starts going higher than 9 will you see effects on some of your corals & inverts.
    My frag tank is running on a constant ph of 8.4-8.5 at the moment & my corals are healthier than ever...
     
  11. carlosdeandrade

    carlosdeandrade

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    I doubt its the bio cubes. How does blowing a fan decrease O2 and increase CO2, the best way to lower pH is buy increasing your CO2 levels a fan would just increase the CO2/O2 exchange on the water surface. Remember the air you breathe is mostly N and O2, if it was mostly CO2 we would all be dead. Lower your surface water agitation.
    Ozone does not affect your pH to the degree yours has been affected, in fact your ORP level is inversely related to your pH level, the higher the ORP, the lower your pH. I run ORP at 375mv and I never have high pH. Are you dosing seachem's fusion 1 and 2 or just kH? Check your Ca levels

    lastly, check them pH equipment again, faulty pens and probes aren't uncommon. Good Luck Esmond
     
  12. Visser

    Visser

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    You are missunderstanding carlos.
    Im saying he should only run the fan a couple hours per day so there is LESS CO2/O2 exchange.
    The number 1 rule for a low ph is to get more air exchange over your water surface. So to decrease ph, you decrease your surface air exchanges!
     
  13. carlosdeandrade

    carlosdeandrade

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    A fan over the water surface would increase O2/CO2 exchange with CO2 naturally leaving the water (high to a low concentarion) and being replaced by O2 thereby increasing the pH or keeping it stable. That';s why you should having better airflow and greater surface agitaion to prevent a sharp dip in pH in the evening. Your theory is correct, but not for lowering pH, but rather increasing it.
     
  14. OP
    Esmond

    Esmond

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    My fan runs via my profilux which goes on when the tank hits 25.1 degrees.


    I did test the probe with the ph solution and it was spot on.
     
  15. Fanlie

    Fanlie

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    you says seachem but there are different
    Reef calcuim
    reef adv. calcuim
    reef carbonate
    reef buffer
    reef builer
    reef fusion 1 en 2 (alk calcuim)

    i will never worry about the pH. i hold keep alk 10-12dkh
     
  16. carlosdeandrade

    carlosdeandrade

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    That's fine, my profilux also controls my fans, and I don't have issues with my pH. Esmond I am assuming its your dosing regime, your system sounds perfect to me. Also like visser said, if you LS looks good then don't stress, its about stability, make sure there are no huge swings of greater than 0.1 over a 24 hour period as the pH number is an exponential one.
     
  17. butcherman

    butcherman Moderator

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    you mean 8dKH?
     
  18. Visser

    Visser

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    Dont agree @carlosdeandrade.
    My ph on my frag tank is running at 8.4-8.5 constantly.
    Whenever i switch of my fan for more than 12 hours, my ph drops to 8.1-8.2 & stays there without swinging more than .1 over my 24 hour cycle...

    But since @Esmond is only running it when heat goes up (through profilux), it is rather something else causing the high ph...
    How much of each of the seachem products are you dosing?
     
    Last edited by a moderator: 26 Nov 2015
  19. carlosdeandrade

    carlosdeandrade

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    @Visser, i disagree with you, when are you checking that it drops? If you test the pH at night it will be lower. What you are saying goes against how natural processes work and I know them, I have a MSc in Zoology.:p
     
    Last edited by a moderator: 26 Nov 2015
  20. dallasg

    dallasg Moderator

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  21. dallasg

    dallasg Moderator

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    Chasing PH

    i doubt a fan will change your PH, its the residual CO2 in the room that would be the most likely cause, keeping windows open will help with this
     

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