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my tank became muddy ...greenwater?

Discussion in 'Talk to Tom Barr' started by a-hua, Oct 18, 2007.

  1. a-hua

    a-hua Subscriber

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    my tank became muddy for 3 weeks.
    sometimes it was a little clear (maybe when the light start),
    and sometimes was muddier (before the light close,).
    is it greenwater ? i think they are something different...
    how can i get rid of it?

    http://img136.imageshack.us/img136/2655/ahuavm8.jpg

    ps. there are green dust algae, blue green algae, and diatom in my tank.

    a-hua
     
  2. VaughnH

    VaughnH Lifetime Charter Member
    Lifetime Member

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    It looks like green water. What is the tank size, lighting, fertilizing method, CO2? Those are major clues as to what is the problem.
     
  3. a-hua

    a-hua Subscriber

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    My Tank...
    60*35*65 Cm
    Pl36w*1+fl20w*1
    1/5 Kno3+1/10 Kh2so4 Everyday
    1 Bubble/sec ...co2

    I Am Sure It Is Greenwater Because It Become All Green Now..haha(but It Take More Time Than Before To Become Green)

    I Got A Uv-c Light(15w, 500 L/hr Powerhead) And Used One Day ...anything Should I Notice?
     
  4. evandro.carrenho

    Local Time:
    3:35 AM
    I had a similar issue and needed 3 days of an 8w UV turned on. After that I performed a water changed of about 70%.

    I believe that the green water started because of mistakes in my maintenance routine. Once I have some matter returned from the filter piping to the water column, that triggered first a opaque appearence in the water, and after a few days it turned green. I tried several methods, like blackout and frequent water changes, but they (or me) were all cumbersome.

    UV was the way to solve it. I had some other events of green water but that was all related to the maintenance routines (turned UV on again).

    I scrap my glass before removing water from the tank, and siphon water after having it clean. This brings out all the dirty removed form the glass. I also avoid disturbing the substrate too much, espeacially when removing dead plants. In the past I used to uproot them, now I just cut them near the substrate and leave the roots there to rotten, they serve as food for other plants.

    I always noticed that plants suffer when UV is turned on for a long period. Speacially of chlorosis (white leaves). This seems to be due to lack of iron... I always get zero reading of iron when UV is turned on.

    Regards,
    Evandro
     

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