A different opinion.
I cultivate a medium "nest" of grape caulerpa and prefer it to other macroalga. It is easiest to remove or "harvest" than feather caulerpa. It grows very quickly taking up mass quantities of nutrient as it grows. I remove a large handful every couple of weeks. If you can grow it in an area of your tank that you can devote to it, it is an excellent nutrient export mechanism.
Mark