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How much magnesium can plants use in a week

Discussion in 'General Plant Topics' started by waj8, Nov 27, 2010.

  1. waj8

    waj8 Junior Poster

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    I have 7 ppm magnesium in my tap water and change about 50% of my tank water once a week. I do not dose any additional magnesium. Does anyone think that that the plants could use up this amount of magnesium in a week? I am doubtful but I am not totally sure.
     
  2. dutchy

    dutchy Plant Guru Team
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    Suggested tank level is 5 to 10 ppm, If the tap = 7, with 50% WC you only add 3.5, which is a bit on the lean side, but that also depends on if it's heavily planted or not.

    regards,
    dutchy
     
  3. Biollante

    Biollante Lifetime Charter Member
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    Iron is to hemoglobin as is magnesium to chlorophyll... Tom Barr

    Hi,

    Are you worried about the level of Magnesium? :confused:

    Are you afraid of Magnesium toxicity?

    Iron is to hemoglobin as is magnesium to chlorophyll (Barr Report, December 2005), having a little extra around is certainly better than not enough. :)

    As Dutchy points out you are actually on the low side dosing Magnesium. (Dad-gummed smart that Dutchy. :))

    Also if you have critters in the tank they also require Magnesium. :gw

    If you have a tank with a lot of new growth, or would like a lot of growth I recommend adding magnesium (Epsom salts, usually).

    Biollante
     
  4. Tom Barr

    Tom Barr Founder
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    Not likely you'd run out.

    Regards,
    Tom Barr
     
  5. waj8

    waj8 Junior Poster

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    Actually it is very heavily planted and high light too with lots of growth. I never seem to be able to pass up a new plant.
     
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