Other than the above.... referring to what kills SPS corals.... off the top of my head:
Unstable & uncontrolled levels of
1. PH
2. Alk
3. Calcium
4. Phosphates
5. Dissolved organics
6. Ammonia
7. Nitrites
8. Nitrates
9. Temperature
10. Water circulation
11. Metabolites
12. Lighting
13. Heavy metals
14. Copper
15. Predation
16. Chemical warfare
Others: inappropriate siting, poor handling, poor acclimatization, physical damage, stress, disease.
Did I leave anything out? Take your pick!