Identification

[bable]

Can anyone tell me what these green bubbles on my rock are?

[yagerboy]

Bubble Algae.  Very obtrusive if you don't get ahead of it.  Take the roach out and manually remove with frag tool or tweezers.

[bable]

Okay, thanks!

[therootcause]

Yes it’s bubble algae, more concerning though are the zoas / palys that appear to be on the rock.

If you poke/cut this rock to remove the algae wear appropriate ppe to avoid palytoxin exposure.

Do not cook the rock.


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[DaJMasta]

Haven't actually tried it, but would hydrogen peroxide spot treating help with this?  It's a large area for it, but zoas are pretty tolerant of it as a dip, so you may be able to get a fair bit of area covered with just squirting some on the algae covered portions.

Probably not good to dip the whole rock because of the other potential stuff on/in it, though.

[ReefAddict]

Vibrant also works pretty well at helping reduce and eliminate Bubble algae.

 

If your lucky emerald crabs will also eat it.  

Edited May 7, 2021 by ReefAddict

[AlanM]

That's kind of a lot of bubble algae to try to pick off.  I've always thought it looks kind of cool, but it can quickly take over a lot of real estate.  For a while in a previous tank I had red bubble algae that tends to be bigger bubbles that I liked a lot.

 

As others have said, be careful around the zoas.  Wash your hands well after handling.