Urgent help needed Plate Coral - RTN?

Discussion in 'Urgent Help Needed' started by poiromaniax, 25 Nov 2010.

  1. poiromaniax

    poiromaniax MASA Contributor

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    Hey guys,

    I copied the template from detailed help so you guys can have a bit of info first:


    Tank size:
    1500X650X650

    System Volume:
    650L

    How long has your tank been running?
    6 months (80% of the rock was from my old setup running for 2 years)

    What livestock do you have?
    Sailfin Tang
    Mimic Tang
    Eibli Angel
    Fairy Wrasse
    6 X chromis
    2 X Tomato Clowns
    1 X Mandarin
    Mated pair boxing shrimp
    cleaner shrimp
    Longspine Urchin
    Nerita and Turbo Snails
    Hermit crab
    porcelain crab

    Water Parameters:

    Alkalinity (dkh): 8
    Calcium: 430
    Phosphate: 5ppm
    Magnesium: 1300
    pH: 8.0
    Nitrite: 0
    Nitrate: 5ppm
    Ammonia: 0ppm
    Salinity: 1.025
    Temperature: 26

    What lighting is over the tank?
    3 X 150W MH (Bulbs changed 1.5 months ago) 2 X 54W actinic (bulbs changed 3 months ago)

    Pumps and equipment:
    Vortech MP40W
    Sunsun 12000lph
    ReefOcto DNW200 Skimmer
    Phosban 150 with Antiphos

    Maintenance:
    Weekly 10% Water Change (Fighting GHA at the moment)
    Siphon detritus

    tests and additives (if necessary) bi weekly


    Problem

    So now that you have some info, my problem:

    Yesterday I did a waterchange as I have done for the last 2 months,using Tropic Marin pro-reef matched to tank temp, salinity, etc. This morning I noticed that my green/pink plate had a few small white spots on it (more than spots actually, looked like lost tissue) Seeing as all my other corals were fine, I thought nothing of it,and I dismissed it.

    I came home this afternoon and saw that the problem had gotten alot worse!

    Pics:

    [​IMG]
    [​IMG]

    Now:

    1) What could be the cause?
    2) What can I do to save my beloved plate?


    Please help!!

    Thanks gents
     
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  3. 459b

    459b Moderator MASA Contributor

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    Looks like somethings pecking it..perhaps the eibli? Does the long spine urcin ever crawl over it?
     
  4. Monti

    Monti

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    ok, well i cant see pics coz im surfing on my phone, but it isnt rtn if it started yesterday. Rtn is a few hours, and really there is nothing you can do if you get it. And urchins can be super pains on corals ime
     
  5. poiromaniax

    poiromaniax Thread Starter MASA Contributor

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    I have never seen my urchin go on the rocks, he likes to stay on the glass. (seeing as I have plenty GHA there for him to eat :( )

    It didnt start yesterday. I did the WC yesterday and only noticed it this morning.

    I really hope it isnt RTN :( Would hate to lose the cup coral :(

    Doubt its the urchin, he doesnt like to go on the rocks.
     
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