With such high PAR numbers even on the sandbed, I'm wondering also what corals you started with, and how you acclimated them to the lighting without them bleaching. The AP-700s are clearly overkill here with numbers like that. Nice tank though. The colors don't pop like a full Zeo system tank but they are decent nonetheless.
I usually just pull higher of my light fixture since it is quite easy when having a power winch, then every other days lower down a bit and take about 2 weeks to back to normal position. The AP700 is basically supplement for two sides which ATI not able to cover a 90 cm wide tank.