1. Tank Parameter Stability
2. Good Lighting
3. I use brightwell supplements: calcium, magnesium, potassium, strontium, luguls.
4. I just started dosing adding Seachem Reefplus, and Reef trace. Not sure if its doing anything thus far. TBD.
The top 3 are all tied together. If you have a stable tank, then you will have a beautiful aquarium.