Unbelievable result! Had a bryopsis outbreak in 5 different spots for 5 weeks. Was thinking about the Kent Mag but heard that the formulation had changed and it does not work. Then came across this thread suggested by my LFS. Put 4500 mgs of Flucon into my 205g on Sunday morning with 15 ml of Vibrant. Did not have time to take pictures. There was no change in bryopsis yesterday and I thought I'd take pictures today as a start and then in a few days for progress. However, don't have a single trace of bryopsis left in my tank. It's all gone in less than 72 hours! I still can't believe how fast it worked.