I finally got my 120 up and running well it only took like 3 years. With outbreaks of odinium ( I hope I spelled that correct), that killed all my fish. And now my corals are blossoming, getting very meaty and we are very happy. Oh yeah and I survived a severe outbreak of green hair algae that my lfs guy gave me fluconazole for. I would never have believed it if I didn't see it with my own eyes how well this stuff works