I got rock from my LFS that was fine, even had a coral on one piece. But you never know what's in there. It's not as good as fresh rock from the ocean but still carries all the same risk of pests. I distinctly remember a gorilla crab falling off the first rock I picked up at the LFS and looking back I dodged a bullet (at the time I had no idea what that was). That LFS had aiptasia all over their tanks which I didn't know much about at the time either. It's hit or miss.Hi thanks for your reply, what’s wrong with the rock bins like the one attached at my lfs?