I have been fighting Bubble Algae for months. I have 2 Emerald Crabs that don't do much. I think they knock some loose that gets picked up by the intake of my Power Heads. I bought a Fox Face, but he doesn't seem to like it either. My Yellow Tang will eat it if the Bubbles are very small and floating around in the tank. The only thing that has helped at all is taking the rocks out and using a stiff brush on them. I rinse with Salt or Fresh water and put them back. I also use a Turkey Baster, or Power Head to try and keep the rocks clean. It is a very slow fight.
Just keep at it every day and Good Luck! :rollface: :rollface:
Sally