I don't think you want an emerald crab either. I don't know of anything that really eats it.
I went through a period of a few months when I had a LOT of the long skinny type of bubble algae. I would manually remove some of it, but finally gave up. Then one day I noticed it seemed like less of it in the tank. I also saw my hippo tang eat a couple of pieces of it.....strange I know.
If your nitrates and phosphates are zero, it should go away on it's own. Maybe try growing some macros to outcompete the bubble algae for nutrients.