Not much chance of it. If it is the lights, then it might be the wrong kind of light. List your bulb mix and you might get more comments. Not all light is equal.
I have had 6 HQIs over a standard 120G and the coral all loved it.
There could be a million other things too... like water parameters, temps, stray current, etc. A whole breakdown of your tank, including tests for nitrate, phosphate, alk, mag, calcium, etc might be a good idea.