and don't be fooled by just not seeing anything.
I bought LR
from my LFS
and saw not much more than some coraline. I got it home and put in my tank and for a few months, still saw nothing more. Then, almost over night, I started seeing worms, sponges and even a few CORALS spring to life out of the rock. I've concluded that some items in LR
can lay dormant for a good while and only come out when conditions improve enough that they can grow.
give it time and keep your parameters where they should be, you'll see some life eventually.
rule #1: Patience.