Algae id

[blackjack]

Any body have an idea on what this could be? So many nuisance algae in this tank at the moment that I almost lose track. But this one just popped up the other day and I couldn’t find a likely culprit in any existing nuisance algae threads. Thanks!

 

[takitaj]

Might be easier to ID under water, with white lighting of course.

 

[Uriken]

Its a bit hard to determine out of the water yet It has a look of bubbles which leads me to suggest Bubble Algae. Mythrax crabs can help work on that if that is actually bubble algae.

 

[Tcook]

I have some of that. May be a species of Ulva

 

[blackjack]

Thanks all! When it first popped up I also thought it could have been bubble, but it isn’t forming actual spheres. Some kind of Ulva seems possible, though I’ve never heard of that as a nuisance algae. Lucky me. Here’s another photo underwater with white light… not sure this will provide any more clarity.