I have the best tool for bubble algae removal, chopsticks!!!!
If you have filter socks or other easily removed media in your system, I would use a chopstick. I use them to remove bubble algae without breaking them, it is very easy to do and you can get to bubble algae embedded in rocks, corals etc. The filter media will do the work for you, just remove it when you think it is full. If you keep doing this for a couple of weeks, you will notice a great reduction in the bubble algae. BTW, PF Chang's chopsticks work the best, they are a very hard plastic.