Missing Kole Tang

[straightrazorguy]

OK, I ripped most of the tank apart; no trace of my tang. It's as if he found a portal to someone else's tank....

I tested the water, and all the params were normal; the Ca and Alk were a little low, so I did a 10% water change. I plan on testing the water religiously every couple of days. over the next couple of weeks.

Question for canreefers: what is an indication of a dead fish in the tank? High ammonia? High nitrates? High PO4?