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Please Help ID this growth

Discussion in 'Marine Reef Keeping' started by JeepinEd, Jan 24, 2014.

  1. JeepinEd

    JeepinEd AC Members

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    I've had this tank for over 20 years, with the same live rock, and am still learning. It's a Fish Only tank, currently with 2 occupants. A Coral Beauty and a B&W Damsel. I had several other fish that lived for years in my tank. When my several years old box fish died, a couple of years ago, it killed most of my fish (another learning experience).

    I recently replaced the Fluorescent lights in my tank, with a Fluval LED Reef light bar. Last week, while cleaning the tank, I notice one of the smaller live rocks has several new pink stems growing out of it. The largest stem, located an the other end of the rock, has branched into a Y shape (picture attached). Can anyone help me identify what this is?

    Tank Critter.jpg

    Sorry for the poor picture quality.
    I'm always amazed that after all this time, new things will suddenly appear. About a year ago, what I believe to be Red Sea Lettuce started growing in my tank.

    Thanks.

    Tank Critter.jpg
     
  2. TL1000RSquid

    TL1000RSquid AC Members

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    Interesting, no clue what it is at this point though
     
  3. greech

    greech AC Moderators

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    Sponge.
     
  4. tanker

    tanker Josh Holloway--Be mine!!!

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    Looks like an SPS, but Greech maybe right==a sponge.
     
  5. TL1000RSquid

    TL1000RSquid AC Members

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    Yeah i never had a sponge grow like that before nor a purple one but it could be.
     
  6. JeepinEd

    JeepinEd AC Members

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    Thanks for the replies so far.
    It would be interesting, if these were sponges. I don't think i've ever had a sponge in my tank.
    Here is a different angle, showing the other side of that rock.
    Again, sorry for the poor photo quality.

    Tank Pic.jpg

    Tank Pic.jpg
     
  7. greech

    greech AC Moderators

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    Touch them. If they are soft/bend, they are sponges.

    Sponges grow out of nowhere and they can disappear as fast as they show up. Some will come an go as conditions are favorable for them.
     
  8. JeepinEd

    JeepinEd AC Members

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    They are soft, so I think you're right. They are sponges.

    Pretty cool.

    Thanks for all the input!
     
  9. greech

    greech AC Moderators

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    Welcome. They're pretty.
     
  10. JeepinEd

    JeepinEd AC Members

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    Hey guys,
    Just wanted to post an update on the progress of the "sponges".
    They seem to be doing well, although lately, I'm having to remove algae that wants to start growing on them.
    Check it out:
    P8100120.JPG

    P8100120.JPG
     

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