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Rotala Rotundifolia help

Discussion in 'Aquatic Plants' started by dmallia, Aug 9, 2017.

  1. dmallia

    dmallia New Member

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    About 2 months ago I started a small nano tank. After it was cycled I planted the rotala rotundifolia from tropica 1-2-grow , and at first it was growing really fast. I was dosing tropica specialised and premium ferts 0.6ml 2 times a week with 40% light brightness. I than added co2 and increase the light to 75% and started dosing 3 times a week and it really started to grow, also increased some iron dosing. Than it stopped. I increased a little bit of co2 since I thought it was stunted. CO2 drop checker is dark green to green all day. I also increased the dosing of the micro nutrients, but nothing changed. This sunday after the water changed I started dosing the JBL NPK as I am suspecting it's a macro nutrient defiency or a micronutrients toxicity, since both the specialised and premium ferts of tropica have micro nutrients. Light is also at 100% now. As regard to water parameters I am using RO water + dennerle shrimpking salt mineral gh/kh. Ph 7.5 without co2 and 6.5-6.8 with co2, GH 10-12, KH 3-4 and temperature right now it's varying from 77-82F. What do you think it's wrong?


    IMG_20170808_162516.jpg IMG_20170808_162649.jpg IMG_20170808_162533.jpg
     
  2. Zeus

    Zeus Active Aquascaper

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    Hi

    Not a plant expert, but which substrate you using?
     
  3. keithgh

    keithgh Moderator Staff Member

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    dmallia
    I broke your posting down to make it easier to read.

    About 2 months ago I started a small nano tank. After it was cycled I planted the rotala rotundifolia from tropica 1-2-grow , and at first it was growing really fast.

    dosing tropica specialised and premium ferts 0.6ml 2 times a week with 40% light brightness.

    I than added co2 and increase the light to 75% and started dosing 3 times a week and it really started to grow, also increased some iron dosing.

    Than it stopped.

    increased a little bit of co2 since I thought it was stunted.
    CO2 drop checker is dark green to green all day.

    increased the dosing of the micro nutrients, but nothing changed.

    This sunday (4 days ago) after the water changed I started dosing the JBL NPK

    I am suspecting it's a macro nutrient defiency or a micronutrients toxicity, since both the specialised and premium ferts of tropica have micro nutrients.

    Light is also at 100% now.

    As regard to water parameters I am using RO water + dennerle shrimpking salt mineral gh/kh.

    Ph 7.5 without co2 and 6.5-6.8 with co2, GH 10-12, KH 3-4

    temperature right now it's varying from 77-82F.

    What do you think it's wrong?

    I am far from a plant, fertiliser or a water chemist expert.

    As Zeus mentioned "What substrate are you using" ?

    At a very rough guess you are adding a big mix of additives into a small tank and they just do not work together or a mix of concerns.

    There is no mention of filtration or all the mediums used.

    Co2 type and how its used?

    Lighting type and hrs on/off?

    Water changes percentages and how often?

    Keith:cat::cat:
     
    dmallia likes this.
  4. dmallia

    dmallia New Member

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    As a substrate I am using dennerle black gravel.

    As a co2 I am using a DIY pressurised system with citric acid/baking soda diffused with a fluval co2 ceramic disk. For light I have a chihiros A-series 12w led light with an 8 hours on. Aquaclear 20 filter with a simple sponge and biohome media.

    I stopped dosing the tropical specialiced and replaced it with the jbl NPK fert and tropica premium fertiliser for trace elements.
     
  5. Ed Villagracia

    Ed Villagracia Active Aquascaper

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    the middle photo looks ok. just trim and replant near the other to make it look thicker.
    when it grow tall about 6 inches color [red pinkish leaves] should appear if you give your
    rotala a good light. as simple as that i guess.
     
    dmallia likes this.
  6. Zeus

    Zeus Active Aquascaper

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    So an inert substrate that only gives anchorage to the plants. Alos it doesn't mop up excess nutrients and no buffering of the toxic waste

    Rotala Rotundifolia is an easy plant and it was growing, then you changes some ferts so changing back to where it was growing may be the solution. Also you haven't mentioned Water Changes (WC) ? How much and how often will help us advise you better to a possible solution.
     
  7. keithgh

    keithgh Moderator Staff Member

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    dmallia,

    Zeus and myself are waiting for this very important reply.

    When did you prune the plant to encourage new growth last?

    I was thinking along the same lines go back to when it was growing well.

    QUOTE="dmallia, post: 118913, member: 22195"]Aquaclear 20 filter with a simple sponge and biohome media.[/QUOTE]
    Includes foam filter insert, activated carbon insert and biomax insert and two 14cm extension intake stems.

    Is the carbon insert in the filter?

    Keith:cat::cat:
     
  8. dmallia

    dmallia New Member

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    No carbon insert in the fiter.

    I do 40% wc a week and prune to top of every stem wih the wc
     
  9. Zeus

    Zeus Active Aquascaper

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    Not sure on trimming of your specific plant, however stem plants you normally trim well down and replant the cutting. Then the remaining plant does a Hydra and develops two new shoots.


    Sent from Mountolympus via neural interface
     
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  10. keithgh

    keithgh Moderator Staff Member

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    dmallia

    I would increase that to two 35-40% twice a week and see if that helps.

    It might require more than a tip prune if the lower sections are dying back.

    Keith:cat::cat:
     

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