Yikes.
In an emergency like that, I would set up 2 SW tanks or buckets or whatever - 1 for all the live rock just to keep it wet and minimize die off, and 1 for your corals only, heated with a powerhead.
I would also consider using a product like Cycle in your coral setup. Your corals will cause an ammonia cycle because they are living animals, but they're small enough that hopefully it won't be too severe, used along with the Cycle product.
Good luck.
Mitch
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