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Waar zit de K?

Discussion in 'Dutch' started by Corne, Mar 6, 2017.

  1. Corne

    Corne Junior Poster

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    Mijn eerste post, en voor mij als leek een 'logische' vraag:


    ik lees dat je 100 gram KNO3 moet oplossen in 500 ml. water - daarmee breng je met 1 ml per 50 liter de KNO3 op 2,5 mg/l


    ik lees dat je 50 gram KH2PO4 moet oplossen in 500 ml. water - daarmee breng je met 1 ml per 50 liter de PO4 op 1,5 mg/l


    KNO3 (kaliumnitraat) gebruik je om nitraat toe te voegen en KH2PO4 (kaliumfosfaat) gebruik je om fosfaat toe te voegen


    Maar, als je deze 2 doseert, hoeveel K krijg je dan in je water? Want aan de naam te zien zit in beide poeders Kalium.


    Of is alleen de KNO3 verantwoordelijk voor de kalium toevoeging


    Uitgangswaardes zeggen het volgende;


    NO3 nitraat - 10 - 30 mg/l


    PO4 fosfaat - 1 - 3 mg/l


    K+ kalium - 10 - 30 mg/l


    Waar haal ik/ of komen deze waarde K vandaan?


    MVG Corné
     
  2. Pikez

    Pikez Rotala Killer!
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    Use this site to get the exact answer: http://rotalabutterfly.com/nutrient-calculator.php


    KNO3 supplies both potassium and nitrate.


    KH2PO4 adds phosphate but has a very small amount of potassium as well. If you use these two nutrients, there is no need for an additional source of potassium. All needs for N, P, and K can be met with just these two ingredients.
     
  3. Corne

    Corne Junior Poster

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    Thanks for the answer,


    but that calculater don't provide the option for KH2PO4 - NH4NO3 or K2CO3...


    I'll ask the next question in the Englisch section


    cheers, Corné
     
  4. Pikez

    Pikez Rotala Killer!
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    fablau Does the calculator not provide KH2PO4? I thought it did.
     
  5. fablau

    fablau rotalabutterfly.com
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    Of course, it does provide it! Be sure to click on the DIY button, and you'll find it right before KNO3 :)
     
  6. Corne

    Corne Junior Poster

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    Sorry, my mistake, look over it... :eek:
     

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