Loosing livestock is never fun, and can get quite expensive depending on the livestock. On the bright side, at least it's during TTM or QT, and not while they are in your DT killing everything else too!
Glad all that hectic worrying is on you and not me.
Went through the whole remodel thing a couple years back. We bought a "fixer upper", gutted it, added 2 additions, entirely new roof(including all new trusses), and added a 24x16 covered deck. I never want to live in a remodel project again!
I'm pretty sure if I had a reef tank going at the time too, I would have either neglected it, or broke the tank itself somehow. Stressful times when you don't have a kitchen to cook in, no roof over your head at night, or even running water to take a shower!