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Dark Blue/Black Coral


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  1. #1
    pinhigh1886 - Reefkeeper CR Member
    Join Date
    Feb 2012
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    Brighton, MI
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    First Name
    John

    Default Dark Blue/Black Coral

    Need ID Please! This dark Blue/Black coral has been growing in the back on my rock island for over a year and is getting big. It looks like Acropora the way it grows but is rubbery and flexible. It is dark blue/black with light blue growth tips. It is growing in a pretty shaded area but is now starting to get light as it grows from underneath the light? The colony is now the size of a baseball and started as just a little tip sticking out of the live rock I purchased. Any ideas?

    20130815 205445 zpsbfea3cc4 - Dark Blue/Black Coral

  2. #2

  3. #3
    pinhigh1886 - Reefkeeper CR Member
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    Feb 2012
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    Brighton, MI
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    John

    Default

    Quote Originally Posted by Tankster View Post
    is it a sponge?
    I guess that is what I was thinking at first but again it grows like acropora and branches off in every direction. It also has light blue growth tips. Not sure I have seem growth tips on sponges? Maybe?

    Also I thought all sponges had a tube like structure with a hole in the top. The tops are all closed and rounded?

  4. #4
    CR Member
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    Aug 2013
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    port huron,mi
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    andrew

    Default

    could it be some kind of gorgonian ? its kinda hard to see the pic is a bit dark ,from being the back of your tank i suspect.

  5. #5
    pinhigh1886 - Reefkeeper CR Member
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    Feb 2012
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    Brighton, MI
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    John

    Default

    Yeah it is dark and I used my phone. I will try to get a better shot? I am worried it will take over my whole tank eventually!

  6. #6
    binford4000 - Reefkeeper
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    Feb 2011
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    farmington hills mi
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    Old man
    Awards Tank of the Month - May 2012 Tank of the Month

    Default

    Looks like some type of leather. Does it have a skeleton structure like acropora or is it soft ?? If it was a type of acro you would be able to snap branches off. I am going with it is a sponge

  7. #7
    pinhigh1886 - Reefkeeper CR Member
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    Feb 2012
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    Brighton, MI
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    John

    Default

    Quote Originally Posted by binford4000 View Post
    Looks like some type of leather. Does it have a skeleton structure like acropora or is it soft ?? If it was a type of acro you would be able to snap branches off. I am going with it is a sponge
    No like I said it is soft but grows like acropora. No hole at top of each branch but I am thinking sponge too. Growing like crazy. Hope I can control it if it gets too big. Anything eat sponge but yet generally reef safe?

  8. #8

    Default

    i had a sponge like that, if too much just grab a handful and pull it out. I wouldn't worry too much about it though.
    Last edited by Tankster; 08-20-2013 at 09:25 AM.

  9. #9
    ReefTech - Reefkeeper Moderator

    Join Date
    Jan 2012
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    waterford
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    Matt
    Awards Wheel Master Award - Helping with run the Frag & Swag wheel at the Michigan Coral Expo & Swap 2014. Yugo Award - For running the CR booth during MCES

    Default

    Quote Originally Posted by Tankster View Post
    i had a sponge like that, if too much just grab a handful and pull it out.
    +1 on it being a sponge. I had the same thing growing in my sump before I drained it to move it into my basement. It was actually in my refugium but never spread anywhere else so I was never concerned with it. Just as Tankster mentioned you can just remove pieces of it by pulling them out with your hands. Your gonna need to keep an eye on it cause the one I had just spread everywhere with no sign of stopping so it may just continue to spread everywhere in your tank if you don't keep trimming the branches back. Not sure what kind of water parameters are needed to get this sponge to form and grow cause ever since I drained my sump, moved it, then refilled it and started running it I don't see any signs of it growing anywhere anymore.

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