How do I get rid of this bubble-like algae?

[pober]

This bubble-like algae has spread to dozens of spots in my mixed reef tank over the past month. I believe it’s Dictyosphaeria versluysii.

I have SPS, LPS, mushrooms and a clam. I have a blue tuxedo urchin, but I haven’t seen it eat this stuff. I can’t take the rockwork out.

Anyone had luck getting rid of it? What eats it? Would an emerald crab help without bothering the corals or clam? Any treatments that work with the rocks left in the tank?

Any help would be appreciated. Thanks!

 

[Gumbies R Us]

#reefsquad

 

[Fish Fan]

Yes, Emerald and Pythos crabs will eat bubble algae. Some warn against manually picking the bubble off the rock, but I've done that, and I don't think it caused them to spread and more than they already were.

Good luck!

 

[Rocks reef]

Looks more like sponge.
I have never seen algae look like that TBH.
@ISpeakForTheSeas

 

[Fish Fan]

Looks more like sponge.
I have never seen algae look like that TBH.
@ISpeakForTheSeas

You're right, that's not bubble algae

 

[pober]

Mine feels hard, and the surface looks like tightly packed little bubbles. I think it looks quite similar to an unusual bubble algae called Dictyosphaeria versluysii. Here's what I found:
https://www.hawaii.edu/reefalgae/invasive_algae/chloro/dictyosphaeria_versluysii.htm