PH and ALK too high

Discussion in 'Water Parameters and Additives' started by Franske, 9 Oct 2008.

  1. Franske

    Franske

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    Hi can anyone help me on how to lower your ph and alk since my ph is 8.8 and my alk is 11,or any advice on what is the most common cause for these parameters being to high
     
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  3. Ocean

    Ocean Lazy Sea Slug

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    Your Alk looks fine, only the PH that looks out, are you doesing kalkwasser?
     
  4. Alan

    Alan Admin MASA Contributor

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    The best way is to stop adding alk suppliments for a while.
     
  5. Alan

    Alan Admin MASA Contributor

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    Sorry, what kits are you using to test the levels?
     
  6. viper357

    viper357 Admin MASA Contributor

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    A good waterchange should also help. Maybe 25-30%.

    But you need to tell us what you are dosing and how often you are dosing.
     
  7. Franske

    Franske Thread Starter

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    I only dosed baking soda once when my alk was a bit low and thats all
     
  8. Mekaeel

    Mekaeel Moderator MASA Contributor

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    If thats what you are dosing, put a stop to it until your ph and alk comes down.
     
  9. Franske

    Franske Thread Starter

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    No im nopt dosing it anymore,only did it once to get my alk to where I want it to be and ive read that it has a small ph reducing effect
     
  10. Alan

    Alan Admin MASA Contributor

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    ???
     
  11. Zanderdevos

    Zanderdevos

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    you could use a PH and Alc kit.It lets you test it and correct it.
     
  12. Alan

    Alan Admin MASA Contributor

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    Hi Zanderdevos welcome to MASA, nice to have you on board, please start a thread in the new members section and introduce yourself.
    I am trying to establish what test kits are used as some are accurate and others are....lets just say 'are best avoided'.
     
  13. Reef Maniac

    Reef Maniac MASA Contributor

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    I agree, your alk is fine...

    Please respond to Alan's question - your pH test is most probably wrong (old test kit, using inaccurate kit, using fresh-water kit...) We really cannot help if we don't know more...

    IF the pH is really that high you could just add a small quantity of white vinegar to the tank, or bubble some CO2 into the water, but you REALLY need to confirm if your test results are accurate BEFORE you do anything.

    Hennie
     
  14. Shaun

    Shaun Retired Moderator

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    some corals like Pin c will tell you if Ph is to high. It wont extend p an start to rot.
     
  15. Tony

    Tony

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    The alkalinity is a bit too high although in my crazy days I had an alkalinity of 15DKH. Try and get it to about nine which is middle of the range. I don't like dosing with bicarbonate as this creates an excess of sodium ions which destabilises your system.
     
  16. Franske

    Franske Thread Starter

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    I used an electronic tester and then tested it again with tropic marin to be sure and yes it is correct,what could be the cause and how can I get it down to 8.2
     
  17. Reef Maniac

    Reef Maniac MASA Contributor

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    Like I previously posted...

     
  18. Franske

    Franske Thread Starter

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    Okay cool reef maniac will try that out later today,thanks for the help
     
  19. Reef Maniac

    Reef Maniac MASA Contributor

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    Just be VERY careful not to over-dose. Plan on dropping the pH by not more than 0.1 in 24 hours, and watch out for "over-shoot". Remember: only BAD things happen quickly...

    Hennie
     
  20. Franske

    Franske Thread Starter

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    Okay but how many many viniger per day should be enough for about 250l of water
     
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