Bubbles under Zoanthids

[Pakman2]

The scrambled egg Zoanthids seem to have these 3 bubbles underneath them. They are dark gray/black/purple in color. Does anyone know what this might be? I dip all my coral prior to introducing them into my DT.

 

[Cherub]

bubble algae just pick them off outside of the tank. they're hard

 

[Cherub]

wear eye protecting as sometimes zoas squirt. not very often but just in case

 

[Pakman2]

wear eye protecting as sometimes zoas squirt. not very often but just in case

bubble algae just pick them off outside of the tank. they're hard

I’m new to this hobby. Can bubble algae spread? Does the algae just pull off? Should I dip the coral again?

 

[Cherub]

it spreads if you leave it there. pull the plug out go to a sink and pick it off, rinse off the plug and stick it back in the tank. super easy. use your finger nail. I meant they're hard to the touch not hard to deal with lol