Option,
There are a lot of... well... "options" with regards to macroalgae application. Primary benefits are wate reduction (Nitrates and Proshpates), a predation-free breeding ground for copepods/amphipods, a constant source of food for your herbivores/omnivores, etc. Rather that get into more detail, I suggest you look ot posts with the words "Refugium, ecosystem, coulerpa, etc." in the title. Good luck and be careful or you'll wind up a skimmerless plant-head like me.