Urgent help needed Corals dying

Discussion in 'Urgent Help Needed' started by danimal, 3 Oct 2013.

  1. danimal

    danimal

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    Hi guys

    Over the last few months something very strange has been happening in my tank.

    It started off with one or two corals getting sick and not recovering. More recently single corals will start to die, or even a single head (like my torch) but the rest of the coral, or neihgbouring corals of similar species remain healthy.

    Here are my parameters:

    pH: 8.2
    kH: 8
    Mag: 1300
    Cal: 420
    Salinity: 1.026

    I use Seachem Reefsalt, 15% WC once a month.

    Filtration:
    18cm DSB with chaeto and algae scrubber above.
    TS2 skimmer.
    500ml biocubes

    Dosing:
    Seachem Aquavitro Range - 8.4, Calcium and Ions, with Fuel added every now and then.

    Lighting: 54* cree 3W LEDs, DIY

    Livestock:

    Regal Tang
    Sailfin Tang
    Clownfish
    Mandarin
    Lionfish
    Cleaner Wrasse
    Black Tang (don't know proper name, the common one caught in Natal)

    Coral banded shrimp

    Ok, the hard part - here is the list of corals that have gotten sick or died in the last few months:

    Red plating monti
    Green plating monti - the red went first, literally died over the space of 2 days. The green went about a month later. Both corals had started off the size of a R5 coin and grown to about the size of a side plate. The weird thing is, with the green monti I had bumped it once and broken a few pieces off, so I put them elsewhere in the tank. These frags are still doing fine! ???Had these for more than 3 years, really sad to lose them.

    Trumpet coral - had it for 2 years, one day all the heads remained retracted. A week later it was dead.

    Open brain
    Hammer coral
    Moon coral
    Various mushrooms


    Here's a full tank shot (the green monti is still fine here, the red had just died):


    This pic I took this morning - I've had this brain for about 18 months and it has thrived - until now. You can see the dead moon coral behind, and the dead green monti to the right.

    With each coral, the same process happens - it closes up and slowly fades away. Very disheartening!

    Sorry for the long post, I thought it best to post as much info as possible.

    I'm at a loss. Do I have some bacteria? Or perhaps something that comes out at night and munches on corals?

    Any help, ideas or insight, please!

    Cheers
    Dan

    resized_2013-07-23-141.jpg

    resized_2013-10-02-242.jpg
     
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  3. danimal

    danimal Thread Starter

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    sorry not sure why the pics aren't in the right place in the text. but you get the idea.
     
  4. Zandy

    Zandy

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    Can you maybe confirm your alkalinity of your tank ? SPS needs quite a high alkalinity range to survive. That will explain the monti that died
     
  5. Zandy

    Zandy

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    Also what is your NO3 and PO4 readings? I would suggest to take a sample of your water to a petshop and have it tested.
     
    Last edited: 3 Oct 2013
  6. Zandy

    Zandy

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    Also you have a lionfish in your set up which means that you most propably dont have a cleanup crew like snails, crabs ect. If i have to take a quess i would say that your phosphate and nitrate levels is high.
     
  7. danimal

    danimal Thread Starter

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    thanks @Zandy

    havent bought a NO3 or PO4 testkit since I first started the tank 4 years ago, will go get new ones.

    I've kept lionfish almost continuously since the first year, so I don't think it's that. although... i must admit I haven't topped up my hermit or snail population in a while. will go get some this weekend.

    I suspect the NO3 and PO4 readings may be highish... will go get a kit today and post results.

    thanks!
     
    Last edited by a moderator: 26 Nov 2015
  8. 459b

    459b Moderator MASA Contributor

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    If nutrients were high, youd see discoulouring/browning of corals before they died.
    Such fast tissue recession like that is usually caused by a spike in a parameter (normally temp, KH, pH) or by a pest. have you changed anything recently?
    Have a look at your tank a few hours after lights out and see whats crawling around.
     
  9. mandarinman

    mandarinman

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    Nothing wrong with kh of eight if it is stable it might be a lighting problem. Ask for someone with par tester to test your par in the various areas of tank
     
  10. danimal

    danimal Thread Starter

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    haven't changed anything recently. will do the red torch thing tonight
     
  11. hotdog83

    hotdog83 Clone Fish

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    I agree that it might be nitrates and phosphates. What liverock do you have in there? Is any of it sandstone based?
     
  12. Fanlie

    Fanlie

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    Black Tang :eek: R8000-R12000, I though you means blue eye Kole tang
    test PO4 NO3, how is temp swipe? and do you give coral food? or element ....
     
  13. danimal

    danimal Thread Starter

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    liverock has been in place for 4 years, don't think it's sandstone based.
     
  14. charlv

    charlv

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    Hey danimal do run activated carbon in the tank?
     
  15. viper357

    viper357 Admin MASA Contributor

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    Where do you get your RO water from? Any idea of TDS reading?
     
  16. danimal

    danimal Thread Starter

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    used to, took it out when I put the biocubes in.

    I've got a waterboy RO unit, haven't checked the TDS in ages - will do that tonight!
     
  17. danimal

    danimal Thread Starter

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    temp is stable at 26 deg C. feed fuel once a week, plus a marine mix i make of shrimp, calamari, garlic, nori, etc etc that I blend together.
     
  18. charlv

    charlv

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    Activated carbon help for chemical warfare in the tank
     
  19. WarrenElvis

    WarrenElvis

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    Could be an issue, maybe you have gone through your membrane, and need to replace it as well as pre filters. Always advise put an inline tds meter from @TheWaterboy to be used with ro machine
     
    Last edited by a moderator: 26 Nov 2015
  20. hotdog83

    hotdog83 Clone Fish

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    Could definitely be the RO, ran mine for 5 years, then decided to test TDS and it was sitting at 126! :eek:
     
  21. Zandy

    Zandy

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    I still remain to say that the high nitrate & phosphate could be the issue. Although i am running biocubes , i also run phosgaurd as well as activated carbon.
     
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