Tank is 3 months old, water has been stable for 2 months (Ammonia=0, Nitrates=0, Nitrites=0, Ph=8.1- 8.2 for the last 3 weeks, Kh=12 drops). I'm adding calcium for the LR. See the rest of the tank info below.
My Yellow Tang was one week old when he died (Last Sunday), Now my Naso died, he'd been...