4FordFamily
Tang, Angel, and Wrasse Nerd!
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My Tank Thread
I"ll be honest and say that I didn't read the whole thread. I just want to share my thoughts on what has happened here. 1. Your tank wasn't mature enough to handle that large of a bioload that quickly. Introducing your stock slowly is very important with a new tank. The presence of ammonia and nitrite are what tells me this. 2. The chromi sounds like it had a bacterial infection. (fungus is not something found in saltwater) Chromis are very prone to this and Uronema which can kill them pretty quickly at times. 3. The other fish likely died of a parasite if you haven't used a QT with your additions. Without pictures it would be very difficult to diagnose the disease, but I can tell you that it was probably velvet or maybe flukes. Velvet especially can kill very quickly and sometimes without showing much of a sign at all. Visit the Fish Disease part of the forum and read through the stickies there for more info on how to QT properly and how to treat the most common diseases.
Best of luck! I'm sure somebody has already stated all I just did so I'm sorry if I'm repeating others.
I concur on all fronts.