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Thread: Need help : Cryptocoryne Rot

  1. #21
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    Looks like deficiencies to me with such low PO4 and NO3. Maybe you can try feeding your fish more food to increase N and P.
    Cheers!!

    Sherwin Choo
    [email protected]

  2. #22
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    ----------------
    On 3/9/2003 9:38:19 PM

    Sorry late reply. The tank as mentioned is 2ft. The glosso is rotting at the leaves. Only the older one got affected. Even after trimming it, it start again. Nitrate 5 ~ 10ppm. PO4 last measured 0.1ppm. Temp at 28~29deg. I now suspect is the spotted algae on the leaves that causes it. But is it possible?

    Regards.
    ----------------
    I don't think so. Usually, it is the other way round, the algae will grow on an already weaken or dying leaf.

    What traces are you adding? How often?

    Maybe you can consider uping the trace.

    BC

  3. #23
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    Errr... the NO3 looks fine. You need to push your PO4 up to 0.5 to 1ppm. Feeding more should help. Or consider dosing PO4 either by KH2PO4 or Seachem Flourish Phosphorus. Since you tank is small, the latter may be a affordable and convenient choice.
    Vincent - AQ is for everyone, but not for 'u' and 'mi'.
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  4. #24
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    I'm currently loading 3x36W to the tank. Plants like rotala rotundifolia ludwigia inclinata, ludwigia arcuata and tiger lotus grew wonderfully red. I guess the intake of N and P is high due to the light. I do feed bloodworms to my tetras and puffer. High in P? Fertilising is like 2.5ml twice per week with Florish,2.5ml Florish Iron and daily dose of K. Anyway, I will try to increase the P and see how it turns out.

    Many thanks....
    Everything should be made as simple as possible...but not one bit simpler.

  5. #25
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    Just stumble upon this interesting ratio relationship of N & P

    http://www.thekrib.com/Plants/Fertil...sphorus.html#8

    maybe you want to check it out...
    Everything should be made as simple as possible...but not one bit simpler.

  6. #26
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    MMMmmmmm..the ratio is actually 10:1 (N:P) as mentioned by Mr Tom Barr.
    Plant Physiology by Taiz and Zeiger

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    Ah yeap, which is why I asked you to push you PO4 up to about 1ppm.

    My experience so far is that you don't have to get anal about the 10:1 ratio. If you have high NO3 and control your PO4, you should have much trouble with algae. Just maintain your PO4 consistently at about 1ppm. Higher NO3 is actually preferred by some plants.
    Vincent - AQ is for everyone, but not for 'u' and 'mi'.
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  8. #28
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    Re: Need help : Cryptocoryne Rot

    I have a problem in my 230 lt tank. Ive been running my tank for 5 weeks now. Although the fish seem healthy, my live plants are rotting away. They start with little holes, and then they rot away. All my plants are affected. Until few days ago, my annubias seemed fine, but they also got affected. They have little holes and black spots on their leaves while all the other plants are rotting away.

    I have removed one plant completely because it just rotted all together. At the roots there were some black dirt (and smelled very bad).

    Im usuing FLOURISH SEACHEM substrate in bottom..and then covered it with gravel.

    Recently i had problems with high ammonia and high ph. I just managed to regulate that to about ph.7.5 and ammonia about 0.2mg.

    However my phospage is very high at the moment.

    Im also using IRON supplement by SEACHEM and EXCEL.

    My light stays on for about 8 hours per day. Using T5 bulbs.

    Water temperature: approx 27-28 celcius

    Can you help? I have done research on the net , and i found some possible causes: cryptocoryne rot, high phosphate.

    I would appreciate your help.
    Last edited by michael; 19th Sep 2010 at 19:37.

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