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Thread: ideal trace mix

  1. #1
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    ideal trace mix

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    Hi,

    what would be your ideal trace mix ??
    I guess were only looking for levels of Fe, B, Mn, Zn, Cu, Mo.

    S and Cl will already be enough in the water as SO4- (K2SO4) and Cl- (KCl), so I don't think they are needed in a trace mix.

    Ca and Mg are an other issue. They are often in the tap water, but differs strongly from egion to region, so no Ca or Mg in a trace needen.

    What do you think of this (Fe as reference =1)

    Fe=1.00 / B=1.00 / Mn=0.50 / Zn=0.15 / Cu=0.05 / Mo=0.005

    Do you think specifiek plants / plant families do need a particular element much more ?? (red plants for instance)

  2. #2
    I don't know all that much about the specific trace element requirements of plants, like how much is enough or how much is too much. But offhand I would say it might be an idea to reduce the copper slightly. At 1/20 of iron it's a bit high, IMHO. If it was my ideal mix i would have it at 1/50 or less just to avoid problems with the fish and shrimp.

    That said, my current trace mix is Rexolin APN from AkzoNobel, which has copper at 1/25 of iron, and so far I haven't had any problems that I can definitely attribute to the copper but I'd still prefer to have less. Plantex has it at about 1/100 of iron, and a lot of people seem to be pretty happy with that.

    Are you mixing your own recipe or is this a new commercially available product?

    Regards,
    Kevin

  3. #3
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    @ Kevin :

    I'll be mixing my own fertilizers (not only the traces) ofcours at lower prices

    There is a lot more than bare numbers. Just see for example :
    http://users.pandora.be/perrush/chelatoren.jpg

    But the bare numbers are important too.

    I'm not planning to make it commercialy available, but I can always ship a few grams

    Tnx for the input.

  4. #4
    That's useful information. My trace mix has DTPA as the iron chelator, EDTA for all the other metals. The local hydroponics outfit sells a few metal-EDTA salts and I had thought about mixing my own recipe, but it seemed a bit of a PITA. Maybe a good idea would be to get everything except copper and add them to the existing mix to dilute the copper. But that's a project for another day. Good luck with your mix.

    Regards,
    Kevin

  5. #5
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    Fe:B = 1:1 is way too high in my opinion.

  6. #6
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    you're complete right madans, it was just a little teaser to see if people actually read my post. And I had my reasons to put it " a little " higher as normal. But not much discussion on this thread, so I never revealed my reasons.

    never mind :

    this is what I had really in mind :
    Fe=1
    Mn=0.5 (is this to high ?? don't think so, but is higher than most traces)
    B=0.25
    Zn=0.15
    Cu=0.05 (I would have set it at 0.1, but most are very reluctant about Cu)
    Mo=0.01

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