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Thread: Light Green/Yellow leaves

  1. #1
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    Light Green/Yellow leaves

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    Does anybody knows why the plants' leaves turn light green/yellow? On the other hand, My red colour plants are growing very well. I added liquid fertilizer that claim to make leaves green. But..... By the way, the colour of my water is light yellowish..

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    Do you add any new wood into your tank? I think the yellow water is due the acid given off from the new wood(if you have add a new wood)

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    ----------------
    On 8/18/2003 12:10:24 PM

    Does anybody knows why the plants' leaves turn light green/yellow? On the other hand, My red colour plants are growing very well. I added liquid fertilizer that claim to make leaves green. But..... By the way, the colour of my water is light yellowish..
    ----------------
    What are your red colour plants? If it is Red Lotus, they will forever be red.
    What are the plants turning light green/yellow?
    koah fong
    Juggler's tanks

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    yellowish water either due to :

    - new wood
    - dosing too many iron.

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    On 8/18/2003 3:48:05 PM

    yellowish water either due to :

    - new wood
    - dosing too many iron.
    ----------------
    if new wood then wat to do to make the water clear? remove the drift wood and soak it in water seperately or is there any other methods?
    If I have a dollar & you have a dollar & we swap, neither is better off. BUT if I have an idea & you have an idea & we swap we are both richer

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    Sorry, I don't know the names of my plants. I just anyhow pick from the fish shop. For the red plant, it is red in nature, so I don't really bother abt it.
    But for the green one, when I just bought, the leaves were oval shape (1.5cm x 0.5cm). Nw the new leaves that it grows is "lenghten oval shape" (4cm x 0.5cm). Some more the new leaves are very light green/yellow.
    I have a new drift wood. But I had soaked it for a week before putting it in.

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    Jason,

    Go to these website to help you identify the plants you have:

    Tropica
    Dennerle

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    from wat i know...1 week is still not sufficient for the driftwood.personally i encountered this prob b4.even the gravels below the driftwood got "leached".have to wash the gravels after i took out the driftwood.dats why i dun use driftwood anymore.makes the water yellowish...

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    First of all, let's look at the fertiliser issue.

    Fertilisers
    Yellowing of leaves could be deficiency of iron (Fe), pottasium (K) or nitrogen (N in the form of NH3 or NO3).

    What kind of substrate do you have? Plain gravel? Gravel with base fertilisers? ...or all-in-one substrate like ADA Aquasoil or Seachem Flourite? Good substrate will give you a depot for stored nutrients that can be available for the plants via their roots, especially Fe.

    What liquid fertiliser are you using? Is the contents of the fertiliser stated? Usually, the liquid fertilisers provide the micronutrients (Fe, Mn, Co, etc.) and sometimes a little of K. Play around with the dosage and see if the plant growth/appearance improve. Sometimes you may need more than the recommended dosage.

    On top of these comes the macronutrient dosing. In high light, CO2 enriched tanks, the demand for macronutrients (N, K, Ca, Mg, P, S) is high. Many times we need to supplement these. You can consider K, NO3 and PO4. Search the forum... there is abundant information on these. You can read this article by Tom Barr.

    Lighting
    Insufficient lighting can cause your plants to turn yellow. But according to what you mentioned, your red plants are doing fine. So I would probably rule this one out.

    Anyway, I would recommed a lighting level of 2-3W per gal. Too low lighting level will cause plants to die. Too high, it gets a bit tricky maintaining the nutrients for beginers.

    BC

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    Here is the name of the two plants that I got
    1) Hygrophila polysperma
    2) Nesaea spec

    The liquid fertilizer that I use does not state the contents. The gravel I use is with base fertilisers.

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    Hygrophilia polysperma are good indicator plants and fast growers too. They turn yellowish when they lack nutrients and CO2. Now, are they turning yellowish on their bottom leaves or new leaves?

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    Hygrophila polysperma Sunset Hygro...Good nitrate indicator
    Plant Physiology by Taiz and Zeiger

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    For the driftwood, you can boil it first before putting it into your tank.

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    ----------------
    On 8/21/2003 9:36:14 AM

    Hygrophilia polysperma are good indicator plants and fast growers too. They turn yellowish when they lack nutrients and CO2. Now, are they turning yellowish on their bottom leaves or new leaves?

    ----------------
    They turning yellowish on their new leaves.

  15. #15
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    New leaves? Sure older leaves are not deteriorating?

    Yellowing of new leaves is attributed to a lack of immobile nutrients, usually in the TE group. But we rarely have problems with TE as they are needed in small amount. Frequently we have problems with our CO2, NO3 and K. Mostly macro nutrients are our issues.

    Anyway, it a nutrients problem. Check your CO2, NO3, K and TE then PO4. Since you are not sure what your fertiliser provides, get something that does.

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