I have never had bubble algae before and I haven't added anything to the tank in almost 6 weeks, but this sure looks like bubble algae to me... Hoping someone disagrees....
Yeah, I think I was just in denial. I am thinking that an emerald crab might be in order. I am pretty sure that I can pull that rock out and do some manual scraping to remove the present offenders but I am sure there will be more where that came from. Thanks for the second opinion doc!
I just start a siphon and use a dental pick to dislodge them from the rock and suck them out as I do a water change. They come off very easily.