Live Rock?

[FreshandSaltowner]

my fish store has a few up and running saltwater tanks from which they sell live rock out of. do i need to 'cure' the live rock before i use it or not, as it was allready in an established tank?
is this the way most of you get your live rock?

 

[Chac]

Just buy & plug in to your setup

If it is an establisehd tank with live stock - you may get a good amount of hitchhikers as well