What sized tank, how much rock, and how and when did you cycle. Gotta know someting about the condition of your rock too. Got "stuff" on it that looks like someone can pick off for you?
I'm prolly making this more difficult than it has to be. I've easily seen the CUC (clean up crew) added after the cycle and before fish. Or at the same time.
All the earlier questions might still help you with clean up crew choices and quantity recommendations.
"Life may not be the party we hoped for but while we are here we might as well dance!"