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Unread 08/28/2017, 03:07 PM   #1
Robjrussell
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Sponge ID? Or cyano

Hey all,

Returning reef keeper after a decade plus. Trying to figure out if this is sponge or cyano? I am leaning toward sponge as from the side it looks like it is a little bit grown off the rock.

Any ideas?

Cheers

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Unread 08/28/2017, 03:21 PM   #2
Sugar Magnolia
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Have you touched it? Try brushing it off.


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Unread 08/28/2017, 03:23 PM   #3
Robjrussell
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I haven't touched it. If I brush it off would that be bad for rest of tank if it's cyano?

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Unread 08/29/2017, 01:16 PM   #4
Sugar Magnolia
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Just use some airline tubing to syphon it out. It does look like cyano.


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