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What ppm am I aiming for with each EI dose?

Discussion in 'Aquatic Plant Fertilization' started by Whitebeam, Aug 20, 2010.

  1. Whitebeam

    Whitebeam Junior Poster

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    I'm trying to understand my tank and the dosing I'm giving it. I know that exact levels aren't critical and that is the basic aim of EI dosing - maintaining levels at or comfortably above what the plants need. Trouble is I'm a scientist (physicist to be precise) and I just love to test and tweak so that I can observe what's going on. I have one fundamental uncertainty:

    I see 'recommended' levels of each nutrient as the bands in which 'plants do best' (figures such as 10-20ppm for NO3, 0.5-2.0ppm for PO4 and so on). Am I aiming to dose to these levels as a total for the week, or am I aiming to maintain these sorts of levels for the 'majority' of the time?

    Lots of quotes in the above question to indicate that I realise that these are ill defined words or phrases BTW.

    Peter

    PS: My plants are starting to look better already, thanks to your help and EI style dosing with dry ferts. My thanks to you all for your help so far.
     
    #1 Whitebeam, Aug 20, 2010
    Last edited by a moderator: Aug 20, 2010
  2. Biollante

    Biollante Lifetime Charter Member
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    Crazy-Make-Me's

    Hi Peter,

    These are living things that do not easily give themselves to absolute values. There are a ridiculous number of variables involved.

    Just remember lighting drives system, less light less everything else. We simply wish to provide amounts of things that are non-limiting. Dry fertz are wonderful for that purpose and accuracy to two significant digits are more than enough. :cool:

    Biollante
     
  3. Whitebeam

    Whitebeam Junior Poster

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    Just as well I only quoted figures to one significant digit then ;-)

    I'll just carry on dosing towards maintaining those 'recommended' figures and taking my own observations of tank uptake to tune the quantities added.

    Peter
     
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