I have a 135g mixed reef been set up for going on 2 years now. The tank has always had great water parameters and filtration but my corals have never really seemed to be thriving. They are always open and look good but growth is very very slow for everything. My question is the tank has two black box mars leds which look nice and cover the tank well but I'm wondering if switching to a higher quality light or T5s would help the growth? Any suggestions would be greatly appreciated