Imo, Acros and SPS’s in general are easy; in most cases easier than some torches and LPS if you realize their requirements. No guessing on light and flow because they need both robust; placement is high for best light and flow. Parameters need to be solid, stable and consistent with nature: temp, salinity, Alk, pH, calcium, mag, and trace elements in range, otherwise you’re guessing what the problem is when they happened. If you can’t maintain your parameters in range you are doomed to fail. Ime, inorganic nutrients need to be very low. Po4 below .1 but available if you want “good” growth; it’s scientific fact that high po4 weakens SPS and slows growth and I have observed this personally. No3 is best undetectable with hobby test kits and fed fish, no reason to justify higher levels. Finally feed them directly and often with very small particle foods.
No reason to find the guy that does it differently when it’s easy to follow their natural environment. Some of the difficulties with Acros are pest and overgrown if you follow nature and not the “guy”, Ime.