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reconstitution RO water: hoagland solution

Discussion in 'General Plant Topics' started by yme, Nov 1, 2010.

  1. yme

    yme Lifetime Charter Member
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    following tom's advice I stopped with the reconstitution of RO water with sera mineral salt and just used caso4, mgso4, k2so4, nahco3.

    but then I looked at the composition of the hoagland solution (wikipedia) and wondered a couple of things:

    * N 210 ppm
    * K 235 ppm
    * Ca 200 ppm
    * P 31 ppm
    * S 64 ppm
    * Mg 48 ppm
    * B 0.5 ppm
    * Fe 1 to 5 ppm
    * Mn 0.5 ppm
    * Zn 0.05 ppm
    * Cu 0.02 ppm
    * Mo 0.01 ppm


    there is no Cl or Na. not necessary?

    If I look at the levels of the macro elements, I tend to see that in the aquaria levels (apart from N and P) are 5-10 times lower.

    could/should this also be extrapolated to the micro elements?
    If so, I could run into deficiencies for B, Mn, Zn, Cu, Mo. because you never reach these levels with TMG/flourish.

    probably, this is why the CSM+B exists?

    so taken together: would it be a good idea to add a bit of B, Mn, Zn, Cu, Mo to the RO water?

    greets,

    yme
     
  2. yme

    yme Lifetime Charter Member
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    bump...

    and btw: do you need to chelate Mn, Mo etc?

    greets,

    yme
     
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