Bryopsis is a low nutrient pest. Grows with low/zero nitrates and phosphates. In any case, the corals would have to eat.

I'm going to remove the SPS and sell it off. Any of the rest I can keep without transferring bryopsis to my 55, I'll keep. Then all of the rock and sand will come out of the tank. I'll filter the heck out of the tank, nuke the fuge and the sump, and put rock from my 55 into it. Then I'll go to softies and some LPS. I'll swap the lighting for t5, and get rid of the chiller, calcium reactor and kalk reactor. Keep it simple...