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is 80 PPM nitrate the ideal concentration for plant growth?

Discussion in 'Estimative Index' started by hn5624, Nov 18, 2017.

  1. hn5624

    hn5624 New Member

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    I saw on one of Tom Barrs videos a chart that showed the percentage of plant growth with respect to nitrate levels. Although i'm not entirely sure if i interpreted it correctly as i can't find the video again.

    Assuming maximum light,co2,and other nutrients to scale, is 80 ppm nitrate near ideal for plant growth, assuming that adding more or less would decrease total plant growth.

    I have no fishes in my plantedtanks, aside from snails.
     
    #1 hn5624, Nov 18, 2017
  2. VaughnH

    VaughnH Lifetime Charter Member
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    How much nitrate you need for maximum growth depends on what plants you have, how much light you use, and if you are dosing everything else in non-limiting amounts. As I recall, 80 ppm of nitrates is higher than necessary. But, I haven't researched this.
     
    #2 VaughnH, Nov 18, 2017
  3. Pikez

    Pikez Rotala Killer!
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    80 ppm nitrate per week is about two to three times more than what a high light, high CO2, densely planted tank might need.
     
    #3 Pikez, Nov 18, 2017
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