Urgent help needed Ice/blue tip SPS bleaching

Discussion in 'Urgent Help Needed' started by pXius, 12 Feb 2012.

  1. pXius

    pXius

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    Ice/blue tip SPS bleaching

    Water params:

    Salinity 1.025
    Temp 25-26
    Ph 8.4
    No2 Undetectable
    Po4 Undetectable
    Cal 1420
    Mag 1290
    Dkh 5 (I know its low but its been very stable at this level for quite awhile)

    All my other SPS are fine, just this one piece.... Any ideas?
    Excuse the phone pic


    [​IMG]
     
    Last edited: 12 Feb 2012
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  3. erratiC

    erratiC

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    If you say the rest are fine could then be too high or too low in your tank either getting too much light or too little?

    Is it a new addition... meaning was it acclimated?
     
  4. mytank

    mytank

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    Whats the N03 reading ?
     
  5. pXius

    pXius Thread Starter

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    Its a old piece, been in the tank for months, so have the other pieces, lighting and flow still the same, was in a hurry and missed no3 test, will do it when I get home, still, its just the one piece...
     
  6. mytank

    mytank

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    Good to still check, some corals are can take more N03 and P04 (which is not your issue here) levels than others.

    The others ***Might*** be hardier. Also close inspection no type of funnies i.e. parasites and or fungis?
     
  7. mandarinman

    mandarinman

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    Kh is problem. too low causes flesh loss from bottom of coral
     
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  8. Christo

    Christo

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    Hi

    Ca at 1420! Never seen that! Is that possible!
    If thats true then I geus thats your prob!
     
  9. regis

    regis

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    Probably meant 420
     
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  10. pXius

    pXius Thread Starter

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    yea 420.

    Increasing bicarb dosing to lift the kh
     
  11. Tony

    Tony

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    Your KH is too low. If the recession continues, frag the healthy branches, leave them for a few days to recover and form a new colony by squeezing the branches in a blob of pratleys on a piece of rock. Make sure that the pieces that historically faced up do so and dont face down. The branches that faced up are usually darker and more colourful
     
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  12. irie ivan

    irie ivan MASA Contributor

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    Over what timespan did this occur? Looks more like rtn / stn to me. Bleaching is merely expulsion of zooxanthellae, whereas rtn and stn are two altogethr kettles of fish..... Although either is likely to follow bleaching.
    tissue necrosis is as yet a mistery, the consensus is unanimous that it is a stress response: Polyps bail out and flesh disinegrates. Likely that polyps will settle somewhere away from the stress to start new colonies. This is however highly unlikely in our aquaria, as the stress response is likely to be all over the tank.
    Very likelyly that your coral is stressing due to the very low alkalinity, as already indicated.
    I would not focus mt resources on the salvage of this one colony, rather hope thism one makes it and focus on the others which will follow suit if the stressor is not resolved.........

    Although the generally recommended range for alkalinty is quite broad, there is a reason it exists. Such a low level will not neccescarily cause tissue necrosis immediately, but over time this will happen. Its really simple: sooner or later somethings gotta give........

    Raise your alk, increase flow and frag the remainder to prevent algae attacking.
     
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  13. pXius

    pXius Thread Starter

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    Thanks for all the advice guys.

    I have started bicarb dosing to raise the Kh, I have also discovered that my sump/refugium light has failed, combined with the low KH I probably had massive PH swings.

    As far as time span is concerned, definitely no more than 2-3 days. I'm very tempted to leave the colony in the hopes that it will encrust over the dead tissue, but like ivan pointed out, algae may then be a problem.

    Again, thank you all for the advice.
     
  14. Tony

    Tony

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    Rather keep an eye on the colony and be ready to frag it. In my experience, once they start receding they dont stop till then colony is dead
     
  15. irie ivan

    irie ivan MASA Contributor

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    True, and they mostly cause the rest of your colonies to follow suit.
     
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