I really feel like we need to define "live rock" for the purposes of this discussion.
Which is it OP?
- wet live rock from the LFS (very little life other than potentially bacteria)
- real live ocean rock (with all the hitchhikers and algae)
- "life rock" (dead rock, painted purple)
- white dry, dead rock and bottled bacteria
I added 5 RFAs about a month ago in a 3 month old set up. They are doing great, BUT, I started with real live ocean rock with tons of micro and macro life (some good, some unwanted). The way you started will change the answer to your question.