elegance coral,
Here are a few of the things you are missing, not all, but a few:
Lights at good enoug par, good enoug spectrum, correct photoperiod, water movement, parameters, nitrate, phosphate, calcium, alkalinity (too little nothing too much recession), calcium reactors, huge skimmers, siphoning, placement, alleopathy, water changes, keeping all corals away, price, being knocked over by current or livestock, red bugs, AEFW, STN, RTN, etc.
LPS corals require care as well for sure.
But, to me, SPS, in order to have a crunk SPS tank, you have to walk the razors edge, daily.
Sean