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Thread: My giant clam is dying!

  1. #1
    reefer
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    My giant clam is dying!

    I don't know what happened, but yesterday morning my big Derasa was happy and looked healthy. Last night when I got home, he was gaping a little and his mantle was shrunken in slightly. This morning he is gaping wide open, and is almost completely unresponsive. I didn't make any changes in the last week or so except that I threw some of my old shells in the sump two days ago. I hope I didn't reintroduce a clam disease that wiped out my other ones.
    210 gallon full blown reef

  2. #2
    tat2z_21

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    Is it possible that copper was introduced before and attached to the shells.
    Olduvai Theory - This is a one-shot affair. If we fail, this planetary system fails so far as intelligence is concerned. The same will be true of other planetary systems. On each of them there will be one chance, and one chance only.

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  3. #3
    reefer
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    I had to go to work right after my first post, and when I got home it was dead. Very sad.
    210 gallon full blown reef

  4. #4
    reefer
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    Quote Originally Posted by tat2z_21 View Post
    Is it possible that copper was introduced before and attached to the shells.
    No copper. I lost 4 other clams over the summer, and thought it was due to my tank getting too hot, but that is definately not the case here.
    210 gallon full blown reef

  5. #5
    Smart Bass
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    Any chance of a recent PH or Alk spike?
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    reefer
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    Quote Originally Posted by Herefishyfishy View Post
    Any chance of a recent PH or Alk spike?
    It's a good possibility. All my corals and fish are doing really well though, particularly my SPS corals.
    210 gallon full blown reef

  7. #7
    Amphipod

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    That sucks. Sorry to hear the news. It was a great looking clam too.

  8. #8
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    Quote Originally Posted by Faciosity View Post
    It's a good possibility. All my corals and fish are doing really well though, particularly my SPS corals.
    In a mostly SPS 180 tank, once lost a group of clams after a Kalkwasser issue. Spiked the PH and Alk. Clams then proceeded to spawn and died off one at a time, all corals and fish did fine.
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  9. #9
    Copepod

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    I have a similar type of tank and just lost a Derasa as well. My other two clams (maxima) were fine. I discovered that my salinity was way low (1.022). I normally keep it at 1.026. This happened over the summer when I was not paying a lot of attention to the tank. I kept emptying the skimmer and I did not add the salt to compensate. I should have caught this. I noticed my softies not fully opening, which is a clue I usually catch when I need to add salt. The derasa was twice the size of the maxima's. I'm not sure if that is why it was affected sooner.

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