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Old 06-26-2013, 07:56 PM   #1
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Time for concern?

Tried to get the best picture I could but it looks like there is a rubbery/silicone looking thing forming at the bottom of these! But then again it appears to have many heads in it also.. Some kind if cocoon?
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Old 06-26-2013, 09:29 PM   #2
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Dip your coral in Coralrx and see what happens.
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Old 06-26-2013, 09:39 PM   #3
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I think it is normal when I had a bunch of zoanthids they were there and when my colony eventually died it disappeared not because of the grey thing I had the colony for a while and it was infested with tiny nudie ranches that only ate ate zoanthids. For my Current jasmine polyps they spread like wildfire and just before they spread to some where new the grey looking thing goes over there then they pop up. So I think that there way of reproducing or etc/ spreading. Ian not sure this is the same thing but just trying 2 help
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Old 06-27-2013, 10:52 AM   #4
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I wonder if this guy has anything to do with it.. Snapped this picture a few hours after I posted the original.. When he eventually got off them nothing looked to be eaten though..
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Old 06-27-2013, 11:10 AM   #5
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I've personally never seen a starfish with knobs that was reef safe. It might not be a coral predator, but might be after sponges or clams even.
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Old 06-28-2013, 06:31 PM   #6
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I have something similar to the black silicone mass and mine is a type of sponge. Nothing that is bad and taking over your tank


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This mine and it is a Plakinastrella onkodes Ulizka. Latin name ....a rare type of sponge.
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Old 06-28-2013, 07:20 PM   #7
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That knobby star is not reef safe. That said, it could be sponge.
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Old 06-28-2013, 07:24 PM   #8
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I had that exact same black stuff on my lobo's skeleton. It just went away...
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