$*&$#%$ alk

Discussion in 'Water Parameters and Additives' started by seank, 5 Jan 2012.

  1. seank

    seank

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    PH is at 8.6 , yet my alk is at 6-7. Used to run it between 9 and 12. What do I need to add to get the ALK up and the PH down??

    Come gurus, some help here
     
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  3. Nur

    Nur Starz

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    i used bicarb, have you checked calcium and Mg?
     
  4. FransSny

    FransSny

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    Sean , did this just happen , or did you make changes ?
     
  5. viper357

    viper357 Admin MASA Contributor

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    What is your magnesium like? If you have low Magnesium you will battle to maintain higher levels of Calcium and Alkalinity. Maintain MG at between 1200 and 1400ppm.
     
  6. rakabos

    rakabos

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  7. viper357

    viper357 Admin MASA Contributor

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    Also, what are you using to increase your alk? Do you use kalk? Kalk increases ph and if you're overdosing kalk to increase alk then that may bump up your ph, although a ph of 8.6 is fine, close to the limit but still ok, what are you using to measure your ph? How accurate is it? Also need to know your CA reading. :biggrin:
     
  8. seank

    seank Thread Starter

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    Ahhh, me think this is the problem


    CA is at 440

    Frans, dunno, 1st time I checked since July last year :blush: :blush:
     
  9. Adee

    Adee

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    Nothing wrong with that, though I will ask...when last u calibrated your PH probe?

    If you struggling to keep it above 9...why is that you want it in that range. If your dosing regime find its easier to maintain it at 7...then why don't just keep it there?
    My sytems alk range it 6.5 - 7.5 on average....and I test this at least 6 times a week. Natural seawaters Alk is around 7dkh.
     
  10. seank

    seank Thread Starter

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    Out of experience in my own tank, I saw that if maintained at higher level, Algae does not become a nuisance, and Coraline grows better
     
  11. mandarinman

    mandarinman

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    Your carbonates may be too high in relation to your bicarbonates.
     
  12. mandarinman

    mandarinman

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    pushing ph up?!
     
  13. Ridwaan

    Ridwaan

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    Why dont you then dose kalk?
     
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