would someone identify this coral please?

[Kenny G]

Here is a pic a few months ago. It was very yellow. And the other pic is now. It is not as bright yellow as it used to be. Water params are good except the salinity is slightly low but I am working it back up slowly. Salinity was at 1.022 Opps...... pics are backwards!!

 

[SeaBee]

The yellow/green one in the middle??? Looks like button polyps to me...

 

[Kenny G]

Thanks Seabee. That would be the ones. I just havent been able to figure out the color change.

 

[Bifferwine]

Are you talking about the hairy looking ones? If so those aren't button polyps, but they are called just yellow polyps -- a common type of soft coral.