When I was setting up my tank I used dry rock, added three pieces of live rock from my LFS which had some unseen zoas, coralline, pods, brittle stars, and worms. I used ammonia at 2 ppm for a few weeks to start my cycle and everything lived, I must have a few dozen stars I see their arms poking out of every crevice in the rocks. As stated before I think many things are more resilient than we give credit for. Good luck with them
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