Sorry to hear the bad news Danny! Sometimes things are just beyond our control, especially when dealing with so many microscopic organisms/variables. I like to think that I have a good understanding of how the hobby works, but when I opened ReefBox, it quickly reminded me how much more there really is to learn. It's funny how different it is to run one home aquarium vs 8-9 aquariums at a store. You would think it would be the same exact process just in a much larger scale. That couldn't be any further from the truth. Now that the store has been open 4 months, I'm just starting to learn the personalities of each tank. Even thou I setup each system exactly the same, including filtration, uv etc., I'm quickly learning through observation and trial & error that each system is completely different. They each have there own ecological balance. Through time, I've learned which fish do better in specific tanks. I've learned that tank #2 yields the best results for my blue tangs, tank #3 has good success with triggers, tank #1 is most susceptible to micro algae blooms, tank #1 operates the hottest in comparison to all the other tanks, 2 fish have gotten Head/Lateral disease in tank #3 vs zero fish in all the other tanks, etc. etc..
The point is that no matter how many tanks we setup, they just all turn out to be somewhat different. Sometimes we have a clear answer why things went wrong, and sometimes we scratch our heads losing sleep at night trying to figure out what the heck happened. The most important thing is not to give up. Dust yourself off and keep pushing, learning, observing, and most importantly sharing your knowledge with others as you meticulous do on your thread
I'm sure you'll bounce back with a vengeance...