Pat, th big red thing is a red dictyota that grew out of a turkeywing. We used to have two others in the tank but the turbos ate them right off the rocks. We also had some other neat looking red algae growing but again, the turbos took care of it.
I'm hoping they leave this one alone. It gives a lot of color and movement to the tank. We just found some halemeda growing off one of the new Christmas Tree rocks.