I finally got my tank plumbed and set up. Rather than go all fresh, I ended up taking some live sand (now dead and cleaned) and some live rock. I have had the live rock in the dark for about 4 weeks. There are still hermit crabs, snails, asterinas, bristle stars alive. Does that mean that the bacteria are still in the rock? Does this change whether or not I need to cycle or how I cycle the tank? What are some suggestions. I just put the rock, sand and scripps water in the tank yesterday. Thanks