My experience with Vibrant has been overall pretty good. However I didn't use it specifically to tackle bubble algae, as I only ever had a little bit of that in my frag tank and always try to excise it as soon as it appears like the cancer that it is LOL. It did help me with turf algae and hair algae however. I have read that over time, it can be effective against bubble algae as well. One thing I would caution is that it seems to act on algae through nutrient elimination, and many, including myself, have experienced the appearance of cyanobacteria as a result, given cyano's efficiency in updating nutrients even when extremely limited. So you have to go slow and try to keep your system in balance, as you can easily bottom out your nitrate and phosphate levels with this stuff.
I still use it in limited "maintenance" quantities, and still do get a bit of cyano which comes and goes.
I don't know how bad your infestation is but to the extent you can use a multipronged approach including manual removal, tank helpers, etc in addition to additives, the better off you'll be.