Haha I have maybe a dozen or two of the bubbles in my tank...It doesn't seem to spread very fast, not nearly as fast as the caulerpa, so I don't get too worked up over it. I might try an emerald crab at some point.
O.K. Cool, I was worried it might over run my tank or something. So I should just wait and then just pluck it off with my hands or tweezers. Sounds easy enough. Thanks for the help all. One more question. Will it ever just go away by its self or do I have to pluck it?