You can drown out the purple a little bit by upping the blues, I think the green and reds are on the same switch as the whites so it will take a bit of adjusting I'm sure. And dont forget, these things are uber bright so acclimate your corals!!!
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.