Doing the EI Calculations....

Discussion in 'Aquarium Fert Dosing' started by Superman, 10 Sep 2009.

  1. Superman

    Superman Member

    Messages:
    1,804
    Location:
    Cheltenham
    I've been trying to work out what dry ferts I need to dose my nano (14ltr)

    Going by Nutri-Calc it comes up with the following:
    KNO3 0.08g/day
    K2SO4 0.04g/d
    KH2PO4 0.02g/d
    MgSO4 0.20g/d
    Trace 0.01g/d

    Adding this information into keymaker's calculator with another 50% on top for safety, I get in 100mls for 1ml dose per day
    KNO3 12g
    K2SO4 6g
    KH2PO4 6g
    MgSO4 3g
    Trace 1.5g

    Now looking at the outputs, it shows that for NO3, PO4 and K they go above the EI low range after the first day and go green after a week. I'm concerned about the lack of Mg shown. I know that Fe is sufficient in my tap water, but I'm unsure about the Mg concentration. Achieving 10ppm of Mg seems like I'll be adding a lot of MgS04 and would have to make a separate solution for it?

    Any thoughts and/or comments would be welcome.
     
  2. ceg4048

    ceg4048 Expert/Global Moderator Staff Member

    Messages:
    8,953
    Location:
    Chicago, USA
    I'd just take the standard 20G numbers discussed in the EI article and divide by 4. :idea:

    Cheers,
     

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