Just FYI and in Bob's defense (somewhat) Last I was on their site, Tampa Bay Saltwater (TBS) was using quarried coral from dry land that was dumped into the sea off from barges to get populated. Since they have no control over the organisms in the ocean, your chances of getting a nuiscance hitchhiker are pretty good.
If you do it Bob's way and get some Garf Grunge or live sand from someone else and cycle your liverock like that, you may spend a little more time getting to the point that you are ready for fish, but you also didn't support anyone dredging LR up from the bottom of the ocean. And all your life-forms come from the relatively well controlled environment of another tank.
I actually am in both camps here. The majority of my rock in all my tanks was dead LR second, third or fourth hand that is getting re-seeded in my new tanks. The next largest proportion of my LR has come from other people's tanks that I re-cycled. Only about 10 - 12 lbs of my (nearly 200lbs) LR has come from the LFS. I appreciate TBS rock since they are using a sustainable method of production for LR instead of breaking up living coral reef areas.
I am travelling to Florida this summer some time and I plan on bring back several hundred pounds of dead, coral rock (if I can find it where we are going) to shove into a tank I have specificially running for this task.
I am also hot to try the Garf artificial reef rock recipie. I just aquired the CC to do it and I am picking up sand and cement this weekend.
Lots of options to get your rock, some more conservation minded than others
