I lucked out. 3 days with no power and my water was out for 2. Tank temp kept dropping but I kept heating up this gallon jug of water I had over a gas console heater I hooked up last week. I stirred the water and tried my best to keep heating that water jug but tank temps still dropped to about 58. Most of my house was in the low 40s and upper 30s except for the one room I had the gas heater in. Me, my wife, 2 dogs, 2 cats, a conure, a bearded dragon, a Brazilian rainbow boa, and a 115lb sulcata tortoise shared that room for a few days... very cozy. After all was said and done I only lost my birds nest coral, purple stylo, royal gramma, one of my fire fish, a randals goby, and several snails. If my tank had been any bigger than a 40g I think it would have been waaaay worse. Used all my rodi I had made up for water for us and the pets. Finally got some more made and did a water change yesterday. Some parts of the birds nest and purple stylo appear to still be alive so I haven’t completely counted them out. Though they don’t look too good. Best wishes to all who had hardship from this storm.