Sponge or something else? How to treat on zoa?

[seadewrose]

Hi,

I'm pretty sure the first pic is a pineapple sponge which I read is safe, but is the pic in the zoa and the other growth also sponge or bacterial maybe?

Not sure how to treat on the zoa or if I should be concerned. I wouldn't have known it was there if I hadn't been blowing them off and they closed up showing the white fluff underneath.

Thank you!

 

[Bfragale]

Looks like some type of sponge. I don’t think it’s harmful in anyway, but You can use tweezers and pull/pick it off the zoas.