I actually have has bubble algae for some time now, and it was getting really bad. I found my phosphates to be extremely high, so started combating that. It took me months of gradually useing phosban, reducing my feeding, and then recently started adding a liquid phosphate remover, and I added 4 emerald crabs, which i think one died quickly.
My phosphates are way down, not quite gone, but way down, and i have seen quite a bit of decrease in bubble algae.
If it continues to disppear at this rate, I should be bubble free in the near future.
Not sure which treatment to blame, but I think it was the phosphate removal.