I am back into Salt water after a 14ish year break. I lost my first tank and all its inhabitants due to not quarantineing, I watched in frustration as my whole tank died in a week with nothing I could do. I lost thousands of dollars over a 20 dollar fish. So this time around, I will quarantine every fish i add. Dip all corals, and im undecided on inverts. It is russian rulette to not quarantine fish, I was warned on several occasions, and I had to learn the hard way. Ive missed out of years of reefing because of it, but im back and excited for the challenge.