I have never used Fluconzanole to treat bryopsis. Closest thing I have done is using Erythromycin for red slime algae. I don't doubt that Fluconzanole works. I'd say the big issue with any medication in a reef system is that it can effect livestock and such that you want. So be careful about what else you have in the system. As usual, with any algae control med, you also have to fix the underlying issue, or else you replace one unwanted algae with another species of unwanted algae.
I'm sure that I'm not telling you anything you don't already know.
As for my own system, due to some outside issues, it's become a giant algae farm. I hope to be able to get to work on correcting this soon. With some luck, I should be able to create a new thread that will demonstrate how to clean such a mess up.