The chicken or the egg (calcium or alkalinity) what is first

Discussion in 'Water Parameters and Additives' started by 2balive, 26 May 2008.

  1. 2balive

    2balive

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    Hi

    Very confused, got two opposing "instructions" on calcium supplement and alkalinity supplement additions

    One says I should adjust the PH, then the alkalinity and only then the calcium levels.

    The other PH, then calcium and only then the alkalinity level.

    1. Which order is correct?
    2. Does it matter?
    3. Is influenced by the product I use?
     
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  3. Rory

    Rory Admin MASA Contributor

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    Don't think it really matters. Do the one that's worst first... As for pH I have never ever adjusted pH directly, pH is like a side effect of other parameters to me. Adjust the alk and calcium to the correct levels and then figure out a maintenance dose and then maybe worry about the pH.
     
  4. Quinton

    Quinton Smarty-pants Newbie

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  5. Shaun

    Shaun Retired Moderator

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    Look at getting a Calcium Reactor, then you don't have to worry about them.

    My 2 c.
     
  6. 2balive

    2balive Thread Starter

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    Thanks, great article, graphs are excellent, now i know when to use the balanced stuff and when not to!
     
  7. 2balive

    2balive Thread Starter

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    Trying to kep it simple, the nano already looks like an ICU with all the pipes and wires some in and out of it.
     
  8. Quinton

    Quinton Smarty-pants Newbie

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    Thalion, how does your calcium reactor work that you don't have to worry about alkalinity and calcium? I was under the impression that all they did was dose balanced supplement at a constant rate? I've never fully understood all these reactors, I must confess.
     
  9. Shaun

    Shaun Retired Moderator

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    For a nano, you should not need one, but a Ca RX does help simple.:razz:

    You said it "dose balanced supplement at constant rate", you don't have to worry about Alk, Ca & magnesium. When things are set up you don't have to worry about them, just test for them now and again to make sure things are fine.
     
  10. Rory

    Rory Admin MASA Contributor

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    Hmmm looking back at my post now I realise it may have been somewhat misleading. If you calcium and alk are both really low you must put in a little bit of alk, then a bit of Ca, then a bit of alk, then a bit of Ca etc. By doing one first I meant do the first dose of that one first, not take Ca from 100 to 400ppm in one go!
     
  11. Rory

    Rory Admin MASA Contributor

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    A calcium reactor will dose at a balanced rate, ie. both at the same time and in the right proportions. However you do still have to fiddle with it quite a bit to make it dose at the same rate your tank uses ca/alk and possibly magnesium.
     
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