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Thread: Amazon swords

  1. #1
    Just an Egg
    Join Date
    May 2008
    Location
    New York City
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    Amazon swords

    What does it mean when the leaves of Amazon swords start getting brown spots?

    They never seem to go away and eventually consume the whole leaf to the point where I have to cut it off before it spreads further.

  2. #2
    Tiny Fry
    Join Date
    Nov 2007
    Location
    Sydney, Australia
    Posts
    340
    nutrient deficiency - try adding some chelated iron, potassium sulphate power and a little magnesium (epson salts), in combination with a good all rounder like flourish complete.

    The amount you add depends on the tank specs. I add 1/2 tsp potassium, 1 tsp chelated iron, and a capful of flourish complete once or twice a week to my 300 litre heavy planted tank with 4 WPG of lighting... some add more, but it's best to work it out based on trial and error - if you get too much algae, you've added too much fertz...

    HTH

    R

  3. #3
    Moderator
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    Jan 2007
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    Penrith NSW
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    5,873
    thats eiother potasium or iron defficiency.

    if you remove the old leaves it will just get worse, plants use old leaves as food for new leaves when their substrate is defficient.

  4. #4
    Just an Egg
    Join Date
    May 2008
    Location
    New York City
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    Thanks.
    The tank is a 46 gallon.
    Barebottom so it's easier to feed and clean up after. Plants are in pots.

    So what do I do once I get potassium? Just dump it in?

  5. #5
    Just an Egg
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    May 2008
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    New York City
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    And it won't have an adverse affect on the fish?

  6. #6
    Moderator
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    Jan 2007
    Location
    Penrith NSW
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    in a 46gal 1/2 a tsp will have no effect on fish and give your plants all they need.

    if you can get some root fetrs for your swords, swords are HEAVY root feeders, they are bog plants more than they are aquatics so the majority of nutrient uptake is via the roots.

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