Oh, I'd for sure cut the light back a bit. I only keep my reef tanks at 10 hours of whites a day! LOL That will really help you out I bet.
You might wanna consider replacing the bulbs too, if its a fish only system you probably dont have that many so it shouldnt be too much $$$ hopefully.
Good luck though, I bet you see results just from cutting the lights back.
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.