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I’m setting up my first ever saltwater tank and decided to use dry rock for aquascaping. I know that nitrifying bacteria can be added to the tank from a bottle, but other kinds of beneficial bacteria are best seeded by purchasing live rock. Yesterday I went to my LFS to buy a pound or so of live rock and was surprised to see that their “live rock” was dry. I was expecting it to be wet. When I asked about it, the sales guy said the dry rock was in fact live rock, but the bacteria were dormant. He said when the rock is put into saltwater the bacteria would become active. Does this make sense?