Thanks guys.
There are 8 fish: 5 Apogon leptacanthus, 1 Apogon luteus, 1 Nemateleotris helfrichi, and 1 Paracheilinus octotaenia
Filtration is just a skimmer. Water runs through a uv sterilizer before returning from the sump to the tank. Once in a while, I'll toss in a bag of carbon. Rock takes care of the rest.
Before I rip it apart and replant it, here's how it grew out.
I switched out a few of the cardinals to make way for nicer fish (Centropyge joculator and Liopropoma africanum)