you can learn a lot about live rock by just doing an internet search and checking out the websites of all the various vendors--you can learn how different companies harvest their rock, who uses "seeded" rock, how they treat the rock after it is harvested (like keeping the rock in water vs. placing on racks and spraying with salt water) and how the rock is shipped, and how fast the rock is shipped. We are curing 30# that we got last week, and thought we were well prepared, but as everyone says, "patience" right now we are wondering if this was such a good idea! so good luck to you in your rock-hunting adventure!