Omg... I'm just now seeing this thread, and my eyes are watering like crazy. What an absolutely devastating scene to come upon. I am so sorry.
I can't imagine the trauma of cleaning that up. I once had a crash that wiped out a tank full of fleshy LPS corals in short order. In a desperate state of denial, I moved a bunch that "might still make it" (some dead, others 2 seconds away from death) to a new tank that was barely cycled. I clung to the hope of corals sprouting back to life, but instead they grew a thick white film of decay. When I cleaned that tank out, the stench so strong, I was legitimately worried my neighbors might call the police. I wish so badly I could forget that smell, but I likely never will. The cleanup took an emotional toll on me, and that was without losing fish, so I can't imagine how much worse your experience must have been.
I really do feel for you and your dad. So many of us have been through tank crashes, but this is beyond the scope of what most have experienced. I'm sure your wounds are still fresh, but the surviving angel is the beacon of light in this story. Spoil that fish, and let it be your inspiration for rebound. You are way too good at this to give up!
