Did I do something stupid?

[X the Outsider]

I bought some macro algae today to be more specific it's calerpa. Is this going to take over my tank? My new Emerald Crab was eating some of it, but I doubt he'll be able to eat it all. I was reading through the archives on this stuff, and it sounds like it's more detrimental than helpful.

[stusclan]

Most people use it in their fuge.

[Thumper]

The fuge is the best place for it, it will slowly vanish in the main tank.