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Thread: withering of leave edges

  1. #1
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    Question withering of leave edges

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    hi i have a 2 feet planted tank and is now having problem with tonina sp belem and manau. their leaves are begining to wither at the edges and the lower part of the stem where it is inserted into the sand. i am now wondering if this could be due to the lack of one or more of the nutrients (Copper,Zinc or potassium) or is it due to lighting. i noticed that the light at the bottom of these plants are not that bright could be due to this that causes the stems at the bottom to start to wither? these plants seem to have grown a bit since i brought it back but not as fast as the others.

    thanks.

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    Can you cut and paste the Help Request Form over here and fill it in? Thanks.
    Vincent - AQ is for everyone, but not for 'u' and 'mi'.
    Why use punctuation? See what a difference it makes:
    A woman, without her man, is nothing.
    A woman: without her, man is nothing.

  3. #3
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    Quote Originally Posted by lyh
    hi i have a 2 feet planted tank and is now having problem with tonina sp belem and manau. their leaves are begining to wither at the edges and the lower part of the stem where it is inserted into the sand. i am now wondering if this could be due to the lack of one or more of the nutrients (Copper,Zinc or potassium) or is it due to lighting. i noticed that the light at the bottom of these plants are not that bright could be due to this that causes the stems at the bottom to start to wither? these plants seem to have grown a bit since i brought it back but not as fast as the others.

    thanks.
    Maybe u lack co2 cause my leaves wither too when i run out of it

  4. #4
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    Tank Dimensions (LxWxH, specify units): 2' x 1' x 15"

    Lighting Intensity(No of Watts) :55 W
    Number and type of Lighting (FL/PL/MH) : PL
    Age of light bulbs :10 mths
    No. of hours your lights are on : Previously 4 hrs to combat hair algae for abt 1 week now 10 hrs

    CO2 Injection Rate (bps) : 1 bps
    Type of CO2 (DIY/Liquid/Tank) : tank
    Method of Injection (e.g. Diffusor/Reactor) : diffusor

    Liquid fertilisers Used (Product name. E.g. Seachem Flourish) : ISTA ( taiwan brand)
    Fertilization regime (Frequency and amount per dose) : once a week

    Thickness of gravel : 2.5 inches
    Grain size of gravel :3 mm
    Thickness of base fert : 0.5 inch
    Type/brand of base fert (Product name. E.g. JBL Aquabasis) : cannot remember
    Age of base fert: 6 mths

    Other fertilisers (Product name. E.g. Root Monster) : none

    Other additives (Product name. E.g. Seachem Prime) : none

    Type of Filter (overhead/internal/canister, Product name/model if possible) : canister, eheim 2231


    When was the filter last washed : 2 weeks ago
    Filter media used : those given in the filter when bought dunno what it is called.
    When was the media last changed : none changed
    What was changed : none

    Age of setup (i.e. since initial setup or last major re-do ) : 2 mths

    Water change frequency : once a week
    Amount changed : 20%

    Water surface movement (None/gentle/turbulent) : turbulent
    Circulation (None/gentle/turbulent) : gentle

    Tank Temperature : 28

    Chemical Properties (Fill what you can)
    -------------------------------------
    KH (dKH): 5
    GH (dGH):-
    pH : 7.5
    NH4 (ppm):-
    NO2 (ppm):-
    NO3 (ppm): -
    PO4 (ppm):-
    Fe (ppm):-

    Bioload (Number and type of fish and plants) flora: e.quad, APP, tonina sp belem, manau, amazon sword, Ludwigia sp 'pantana', and 1 more at the left hand corner back dunno what name.
    fauna: 10 cardinal tetras, 8 rummy nose 1 mountain shrimp and 20 bee shrimps.

    Problem: the bottom of the 2 toninas are turning yelow and the tip of it leaves are also turning yellow. wondering if it is due to insufficient fert or insufficient light at the bottom. the plant in the 3rd pic was growing fine initially. After i cut it they grew sprouts and stop at where they are now for about 2 weeks and turning black at the cut stems.

    thanks for reading and sorry for the late reply.
    Attached Images Attached Images

  5. #5
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    CO2..lower the pH down to 6.6 or so using CO2 only and keep it there throughout the photoperiod. Address this issue first before even thinking about the nutrients.

    Once the CO2 is fixed, you can consider doing the following:
    1)Get more cheap and easy to grow plants and pack the tank with it till the current plants get back to their feet and then phase out the weeds.
    2)Do weekly 50% large water changes after prunning, glass/filter cleaning and etc.
    3)Add 1/4 teaspoon of KNO3 3x a week
    4)Add 1-2 rice grain of KH2PO4 3x a week
    5)Dose your current trace mix at 5ml or so 3x a week or consider changing it to flourish or TMG.
    6)Check and recheck the CO2 every so often for the next few days and make sure it is 30ppm or so during the entire photoperiod.

    Nothing works well if the CO2 is not well addressed.

    Regards
    Peter Gwee

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