you may want to think about what you are going to put in there. there was a healthy discussion that live rock is counter productive. yes they have all sorts of good stuff on it. but the cons brought up were
1. they also may carry all sorts of virus, bad bacteria, parasites etc
2. not very porus, not a ton of biological fitration capability
3. expensive
4. unwanted pest, worms, etc
the pros being the biodiversity and huge cultures that boost a system as they spread.
personaly i think like rock is really worth it. yes it comes with risk but personay i think its worth it.
but also i peronally think its best to add lots of biomedia, like bioballs etc. like adding partitions in the
sump that force water through a layer of material. but each thier own.