The interesting thing about bubble algae is that they are the worlds largest single cells! Each bubble is one cell, neat huh?
Emeralds usually eat them. If you get a lot of them, they look pretty, but eventually will take over an aquarium.
See how everything goes for the next few months and see if you like it and everything. If not, and if there is a ton of them, I say restart and take a non-used toothbrush and scrub the rocks and then rinse them off with saltwater to get the rest of it off.
I've never had a bubble algae problem, thank God. Good luck!