Name that one thing to get a stunning SPS tank

[reefermadness]

good stuff here.

The thing I will add is a term I've picked up called "nutrient balance". Getting lighting, flow, chemistry and mechanical things right is fairly easy but to realize that your tank is a closed system and balancing food (nutrient) input with your choice method of nutrient output (skimmer,W/C,Zeo,biopellets) is a hard thing to grasp.