I ordered live rock out of Florida. I took 3 days to get to me in Illinois. The rock had gotten so cold, it was frozen. Some even had frost on them. Will the live stuff on the rocks be dead? Or will some of it survive? The man that sold it to me says that the rock will go into dormancy. And we will see regrowth in a week or two. But what about the little critters? Common sense tells me that everything is dead. But just hoping someone can tell me what to expect. I did put it in salt water with a heater and power head. Any other suggestions would be much appreciated.