Had a reasonably bad case of turf algae,that was starting to become an issue.After watching the BRS interview with Vibrant I decided to take a longer slow approach to eradication,looking at it as a few months process instead of a quick fix.Roses vibrant every two weeks for six weeks ..saw some improvement ...Then I decided to rise flucanazole,,,Flux rx....a week later the algae started to turn gray..added a few ORA urchins and 3 emerald crabs.waited 2 weeks and started vibrant again....turf algae is 95% gone and my clean up crew is scraping the last f it clean...should have taken pics of the before...as with all things in this hobby nothing good comes fast