TBS is amazing! Richard may say that the pack has required amount of rock but don't beleive him. I ordered the 30g package for my 29. There was WAY more rock than I could have stuffed into a 29, I gave away a solid 50% of it. on part 2 of the package there were so many extra's he sent that I gave away half of that as well... I really wish I would have gotten a pic of it when pt2 arrived it looked like a heavily stocked and overgrown planted tank.
I did get some not so nice hitchhikers, I got a bunch of gorilla crabs, rock crabs, some pistols which I found out are harmless, and 1 mantis which I know wish I had back
The other side of the coin is 20ish porcilin crabs, dozens of snails, hermits, corals, I even had a fish alive and kicking in the rock! After 1 year I am still finding new stuff on it... I now have 2 urchins that I never bought and I have no clue where they came from.
I give TBS my 100% vote IF and only if you are willing to take the time when it comes in to get the nasties off. I can teach you how to do it very eaily if you want