zenzence,
My Chaeto & Halimeda seem to be doing ok. The manufacturer had told me that AlgaeFix may slow the growth of macroalgae, but should not kill it.
I still have not had time to properly clean my tank, but the pest is still declining. My computer video card fried and had to replace it along with my C drive which was running out of room. That ended up a full days worth of work.