Strange bubble

[sheyandpete]

Hi i have strange stems one with a bubble on one growing out from the underneath side of my rhodactis mushroom, can somebody please identify this for me.
Thankyou,

Peter.

 

[DSC reef]

Can you post a pic with daylight or less blue. Can't see anything

 

[Baby Ray]

Im not sure what the stems are but the bubble looks like bubble algae to me. If it it bubble algae, get rid of it has fast as possible. It don't grow super fast but it just isn't good to have. I would manually remove it but make sure not to pop the bubble. When they pop, they release bubble algae "seeds"

 

[sheyandpete]

Can you post a pic with daylight or less blue. Can't see anything

Hi more white light as requested, thanks.

 

[DSC reef]

It almost looks like it's a type of calurpra algae and sponge. If that's a piece of bubble algae then as suggested above don't pop it while removing.