Identification Please

[Doo]

Hi All

I picked up in some LR and it had this stuff on it - I would love to know what it is because I think it is super cool...

There are 2 of them and I think 1 might be Algae.

Thank you!

[Myka]

The first one I'm pretty sure is a very bright version of what is commonly simply called Yellow Polyps of the Parazoanthus sp.

The second one looks like a type of Valonia...can you "pop" it?

[Doo]

I never tried popping it...
should I?

[Myka]

If it IS Valonia, you want to get it out. BUT, by popping it you cause it to spread. Either way, most green algaes are not good. If they are good (like Chaeto), they are still not good in the display tank, and are best only kept in the refugium as they get out of control.

[sharuq1]

I agree, try and pick off that algae. I had a similar one grow in my tank when I first started up and I left it alone because I was a newb and thought everything was cool. Then it pretty much got into all the LR in my tank, made a pest of itself and ended with me having to cook the rock to kill it off.

[Doo]

good to know - I will yank it out 4 sure!

Thank you!