Had bubble algae for 4 months! Could not get rid of the stuff. Took over about 80% of my rock and then started growing on my overflow! During that time I tried popping, syphoning out, emerald crabs, scrubbing the rocks outside of the tank and dumping the rocks in hydrogen peroxide and scrubbing more. What finally killed the stuff was a combination of removing the rock, scrubbing and my reef saver VIBRANT!!! I will forever be a fan of vibrant, even if it never helps with anything else in my reef. Vibrant and the final scrubbing with peroxide killed everything left. Took about 2-3 weeks for vibrant to work but along the way I could see the bubble algae turning white slowly. Best feeling ever!