Knock on wood I've never had an issue with bubble algae in any system. I do have a couple emerald crabs though, and my old systems all had tangs that liked to eat it. I'm contemplating getting a tang for this tank to eat the hair algae, but I don't want to keep a tang in a small tank.
Talked about it with the wife the other night and her response was that if we do get a tang, she's not doing the upgrade herself. I have to be there to set the tank up and do the upgrade, which is a big change from not upgrading