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shortage on picture, which is it (one out of three I'm sure of)

Discussion in 'General Plant Topics' started by Koen_v_V, Sep 14, 2010.

  1. Koen_v_V

    Koen_v_V Prolific Poster

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    I have only three species with damage, and I'm thinking of shortage of nutrient.

    Question one, I'm sure what caused this two weeks ago: View attachment 1710

    Then the other two:
    View attachment 1708
    View attachment 1709

    Anybody has suggestions? To me it looks mobile nutrients, the Potamogeton wrightii has somewhat yellow tops when biomass of the tankis getting bigger. At that moment, the number of damage is getting bigger. I'm thinking in order of likelyness: C, N, P, K

    Or maybe I have to throw in more nutrients to be sure what is or isn't... EI style
     
    #1 Koen_v_V, Sep 14, 2010
  2. scottward

    scottward Guru Class Expert

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    Don't waste your time solving specific nutrient deficiencies etc, you will end up going crazy! ;-)

    Dose EI. It allows you to quickly and easily rule out nutrient deficiencies. That's what it's for.

    The only nutrient to then focus most of your effort on, and craziness, is CO2.

    Scott.
     
    #2 scottward, Sep 15, 2010
  3. Koen_v_V

    Koen_v_V Prolific Poster

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    Scottward, thanks for the confirmation. I'm allready slowly increasing CO2, 5-10% per 2 weeks, to rule out 'CO2'.

    Hopefully my current two Koralias on to of the three eheim have ruled out 'flow', they did gave major increase in health for the plants few months ago.

    If the CO2 doesn't improve things (when biomass doesn't increase to much), I'll try adding N, P and K.
     
    #3 Koen_v_V, Sep 15, 2010
  4. scottward

    scottward Guru Class Expert

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    I would rule out the NPK first! Much much easier than getting the CO2 right i.e. isolate CO2 so that it's the only remaining variable. All the other variables, light, NPK, micros, are easy to rule out.
     
    #4 scottward, Sep 16, 2010
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