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NO3 Stress

Discussion in 'General Plant Topics' started by Breakthru, Aug 29, 2009.

  1. Breakthru

    Breakthru Junior Poster

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    Hello my name is Guido and I'm from Argentina. I'm 22 and I'm student of Environmental Sciences. I would first like to apologize for my English I can read but for write I need to use the google translator :p.
    Has long been looking for the reason that the plants are these beautiful reds and could not find the cause although she suspected that stress was a little bright at limiting the growth.
    Now I'm interested in getting the stress by no3 and need help on how to achieve it and that has no test to measure NO3 and PO4.

    My tank data
    100x50x40 200 L
    Substrate: Laterite 20% Humus 20% Sand 60% (3 - 5 cm) + Sand 100% 2 cm + Gravel 2 cm.
    Lighting: 2 PLL 954 36W + Grolux 30W + 865 (6500K) 30W to 20 centimeters above the water in a lid covered with a reflective material. 10 h per day
    CO2: Valve + Glass diffuser + 300 L/h Pump. 3-4 bubbles per second
    Fertilized: "Aquagarden Macros" & "Aquagarden Micros" i don't know exact formula but I was told it was taken from ADA
    Filtering: intern 800 L/h wadding + domestic canister 10L full of "leca" (LECA - Wikipedia, the free encyclopedia)
    Feeding: Twice in the day. Grindal + Tetra color or "homemade pasta for discus" + Tetra color

    Fish:
    Hyphessobrycon herbertaxelrodi x 10
    Tegatus x 9
    Rodostomus x 2
    Serpae x 6
    Scalar x 4
    Tricho x 1
    Betta x 1
    Apistograma borelli x 1
    Otociniclus x 2

    Invertebrates:
    Melanoide Snail x 100 ¿?
    Big Apple Snail x 3
    Small Apple Snail x 30 ¿?

    Plants: (current)
    Blyxa japonica
    Glosso
    Eleocharis sp
    Hemiantus micrantemoides
    Ludwigia glandulosa
    Riccia flotantis
    Cabomba carolineana & furcata
    Rotala rotundifolia
    Heteranthera zosterifolia
    Java Fern
    Echinodorus bleheri
    Narrow Fern
    Windelov Fern
    Proserpinaca palustris
    Cryptocoryne brown
    Rotala walichii
    Limnophila aromática
    Rotala macandra

    Add a picture a little old but that they give an idea of the aquarium
    [​IMG]

    Rotala walichii, Limnophila aromatica and Rotala macandra coloration is poor.
    Can you help me?

    Saludos desde Argentina!!!

    Guido.,
     
  2. Gerryd

    Gerryd Plant Guru Team
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    Hola Guido,

    Welcome aboard!

    Could you provide a bit more detail on the # of bulbs and wattage you are using? 2 or 4 bulbs?

    Could you also provide more detail on your c02 diffusion method and how you determine your approximate c02 level?

    I can't honestly see the point in specifically limiting a plant nutrient to adjust color. Tom and many others use full EI fertilizing method which provides NON LIMITING amounts of all nutrients, and they have great color and growth.

    I think your issue is more likely insufficient c02/nutrient levels for the light you are providing. You also need to ensure that you have good current and flow in the tank to ensure that all plant leaves get some movement. This will help ensure that nutrients are available to the plants and that waste products are washed away.

    Light is what drives plant growth and thus c02 and nutrient demand.

    If any of these are limited (and c02 usually is) the plants will not grow or color optimally.

    You may want to read this thread about different fert routines. The EI method using dry ferts and mixing with water to dump in the tank and a 50% weekly water change to reset the nutrient levels in the tank is cheap and easy.

    http://www.barrreport.com/co2-aquatic-plant-fertilization/3205-fertilizer-routines-one.html

    for dry ferts:

    Welcome to Planted Aquarium Fertilizer

    Hope this helps,
     
  3. Philosophos

    Philosophos Lifetime Charter Member
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    This is an issue I've been looking at. You can drop out nitrates to push red in some plants; it works well temporarily, then the deficiencies catch up. I've tried doing it mildly without much success; the plants got a little bit of a copper color.

    Personally I don't think NO3 limitation is the only way to get red. I've had red in high NO3 tanks but not others with the same species, but I don't know why. Lighting doesn't seem to answer the issue either; I've had red in low light, green in high.

    This is a topic I've been playing with for a while, and haven't gotten very far. Here's a thread from a few months back that I made on the subject:
    http://www.barrreport.com/general-plant-topics/5818-so-what-makes-red.html

    -Philosophos
     
  4. Philosophos

    Philosophos Lifetime Charter Member
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    Here's an article that I believe is related to the topic:

    http://www.jbc.org/cgi/reprint/267/12/8260.pdf

    I'm not sure what they're talking about through most of it, but someone else might. All I can get is something about controlling the production of chlorophyll and carotenoids.

    -Philosophos
     
  5. Myka

    Myka Prolific Poster

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    Although many people say it doesn't work, I have found supplementing Iron increases reds in my plants. I have experienced this with Rotala wallichii. Maybe it was a deficiency that I was now meeting, or maybe it was an abundance...I'm not sure.
     
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