hello i was going to buy some live rock i found on the net, the bloke said i would have to boil it first to kill it. but if "dead" live rock is ok to go in don't that mean most rock can be used? i just really want loads of caves set up before i replace my peacocks will yellow labs. unless yellow labs can go in with peacock? i really dunno how to set the rocks up so they won't fall or even the best rock to use. thanks