SG, temp Alk, ca ,mg stablility and the key building blocks to SPS as are low NO3 and PO4.
What ever method you choose to achive this be it Dosing, water change calcium reactors, etc. You must make sure you monitor the parameters.
Flow this up with good Flow and lighting. (I doubt you can have to much of either)
These things will give you growth.
Then there is colouration, this is where elements liek Fe, I, K come into play along with fuel(amino acids)
Just a side note, dark rich sps colours seem to come from having a certain amount of NO3 and PO4 in the water. Lighter pastel colouration will come from having an ULNS.