well, its hard to generalize, as various species may need specific attention
much of it will be trial and error, along with learning your system.
the best thing to do is start with a healthy piece, i only recommend starting with captive colonies or
frags, they are hardier than wild colonies, and less prone to have disease, amongst many other things.
maintaining a proper nutrient level is important to get good coloration
high lighting is not sufficient, you need the "right" lighting. a good mixture of white and
actinic lighting is usually needed to bring out good coloration, and keep them from just turning brown.
also, you might want to start with a less difficult stony coral.
acropora sp corals are one of the most finicky and temperamental of the branching stony corals. not that they are extremely hard, but they are prone to problems. starting with Seriatopora, Montipora, even the super easy Pocilipora, might be a better way, if you are new to stony corals.
sorry, there is no magical solution, learn as much as you can and try them..
