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Featured Something is killing my fish!

Discussion in 'Reefs' started by Yerfdog, Jan 16, 2014.

  1. Yerfdog

    Yerfdog Registered

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    Hi all,

    Just about come to the end of my tether.

    Had my tank set up for other a year, 6 months ago I had a total wipe of of fish. Coral and shrimp was OK. I put this down to an nem getting sucked into a power head.

    After a couple of months after I started to stock again. All was going well unit 2 months ago my fish just started to suddenly die. Great health one day dead the next. No body found or anything.

    I have 5 fish that is not getting effected and corals are doing great.

    I am starting to think it is something in my rocks or even my new.

    Tank is looking great but what good is a tank that has no fish?

    I am thinking stripping my live rock out and freshwater dip it to flush anything out. Problem is most of it has coral growth on it. How can I flush without killing the coral.

    Really need some help here.

    Thanks

    Mike
     
  2. powderbluetang

    powderbluetang Registered

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    What fish have died, how many have you lost?
     
  3. Yerfdog

    Yerfdog Registered

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    Hi, I have had the following,

    2 x common clowns
    Fox face
    Lipstick tang
    Royal gamma
    Anithaus
    Sailfin tang

    Also found most of my turbos dead. Sure there is more just can't remember.

    Thanks

    Mike
     
  4. heller792

    heller792 Registered

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    if it had been just the anthias then i would think something living in the rocks was a possibility but with tangs and clowns going im not thinking its a predator. Do they just dissapear or is it a slow death then floating bodies?
     
  5. powderbluetang

    powderbluetang Registered

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    Are your water parameters OK, no ammonia, nitrite? Might be daft questions but just trying to get an idea of what you have in the tank, what your system is doing etc. if you aren't seeing dead fish, to me it doesn't seem like a parameter spike but could be a big fire worm, Eunice or rogue crab.
     
  6. Yerfdog

    Yerfdog Registered

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    It really is a case of there at night gone in the morning.
    None of them showed any signs of problems.

    I got 2 blood shrimp that have been in there no problems.

    My foxface was not small so would have found something.

    Thinking about ripping all apart and starting again but 750L is a lot to start again.
     
  7. nigelk

    nigelk Registered

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    take a sample to a couple of LFS and get a test done I did it in my HT when my chromes died after 2 days both LFS said there wasn't anything in the water that would kill the fish that they could test for ended up i have over used a buffer and the white power residue was actually greasy to the touch and I assumed that the fish suffocated after a couple of days
     
  8. powderbluetang

    powderbluetang Registered

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    Her frog, it's a tricky one, could loads of reasons, but I still reckon if the fish were swimming around healthy before bed and gone without a trace come breakfast, then something is taking them. If there was a contaminate in the water or lack of oxygen, a peram spike, anything to do with the water, you would defo find the body the next day or at least some remains.
    I'm blaming a big ass worm of some kind. Might be worth looking with a torch after lights out, try a red bike light, they work well to see what's going on in your tank in total darkness.
     
  9. heller792

    heller792 Registered

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    Agree, if you can suspend a red light above the tank bright enough for you to see everything. Anything in the tank will think its lights out and all the night time critters will come out and feast. Could be a eunice worm or a crab
     
  10. Yerfdog

    Yerfdog Registered

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    That's the thing, I don't currently add anything to the tank.

    My tank is 750l summped, Nac7 skimmer, UV, Reactors.

    I just got a new set of test kits as I was getting 0 readings throughout. Just to be safe I got new kits.

    Lost my lipstick last night. Had it about 3 weeks.

    Ammonia was up a little tonight, must be the lipstick.

    Why would some of my old livestock b OK and anything new does not last.
     
  11. powderbluetang

    powderbluetang Registered

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    Also agree, Eunice or crab. Let us know how it goes, but don't loose hope and give up, bit of detective work is all that's needed.
     
  12. powderbluetang

    powderbluetang Registered

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    So, anything new going in the tank is dying, but old stock survives, then maybe a baddy in the rocks isn't the answer. Are you buying new stuff from the same place? Not suggesting a LFS is selling dodgy quality stock, but there might be a problem there somewhere.
     
  13. Yerfdog

    Yerfdog Registered

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    Hi,

    Different LFS

    If it was prams surely old and new would be effected.
     
  14. JayTee

    JayTee Registered

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    Try posting what your perams actually are. There may be some imbalance that the old stock has got used to and anything new cannot cope. Just a thought.
     
  15. powderbluetang

    powderbluetang Registered

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    Not necessarily. If say over time your nitrate has been rising, then old fish swimming around in it would acclimatize over time but a new fish just added, who's come from zero nitrate water, might well struggle to get used to high levels of nitrate. I'm just using nitrate as an example, it might another peram which is causing the problem. Then there's other possibilities, stray voltage might be causing it. There's loads of possibilities.
     
  16. Yerfdog

    Yerfdog Registered

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    Just run some more tests.

    Ammonia - 0
    Nitrate - 0
    Salt - 1.026
    Phos - 0.1

    Would voltage kill over time?
    I do have some, but don't we all. How much is to much?
     
  17. powderbluetang

    powderbluetang Registered

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    No idea how much is too much. Think voltage messes with the lateral line so induces stress. Sure someone else on here can tell you more. Your perams look fine.
     
  18. sevenfooter

    sevenfooter Registered

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    if the fish are there at night and gone in the morning then it has nothing to do with water para levels at all
    something is eating them or some one is taking them out simple
    you could put a fish in a bucket of tap water from India or out of the local canal and it would just die not vanish ??
     
  19. powderbluetang

    powderbluetang Registered

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    That's what I thought sever footer but why are the original fish surviving? Maybe the new ones can't hack it and there is a bad crab who just banquets every nite on weak and struggling fish.
     
  20. tomtucker

    tomtucker Registered

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    or may be the old fish know what it is and were it is and stay away of a night but the new fish get caught by what ever it is
     
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