I've actually seen worse Ryan.At one point in my 75,the bryopsis was so bad you couldnt see a speck of rock or my corals.That stuffs just hard to rid of.
When mine was that bad,I took every single rock out and scrubbed them with a stiff brush untill there was no green anywhere.Then every time I seen a sprout come back up,I pulled it out.
I know exactly how you feel.I've been there myself.