Wow, I'm so sorry for your losses, I don't know how I missed this thread, my power was out for 4 days as well. I was unpacking my new generastor when the lights finally came on....it took that long to get one. My Blue hippo tang was my first death, I lost the Kole tang, my Lemonpeel angelfish, my serpent stars, and cleaner shrimp. I had no SPS corals just softies in the seahorse tank. The only thing left in the 90g was the lawnmower blenny, the orchid dottyback, and the 2 perc clowns.
I was delighted and amazed but I didn't loose anything in the saehorse tank except some macroalgae. I opened the blinds and direct sunlight bathed half the tank.
Your tank was so beautiful, don't give up. Should it happen again.... Water changes every few hours saved my tanks, sadly I hadn't begun those water changes until after my three fish died (I hadn't thought of it until then). Everything survived once I started doing little changes around the clock....I got desperate to try and save them and cried allot. The corals took it the hardest without light, they just really shriveled up...I don't think anything would have saved your SPS coral except a generator.
Why is a generator not an option, do you live high rise apartment?