You should still consider adding 2 T5's .. With my tank I noticed that my ice cap monti has awesome purple growth tips facing the T5's and nothing facing the MH's were as the millepora has growth facing the mh and nothing facing the T5's .. It got to to do with the wave length I guess.. I have 4x150w mh and 4xT5 and water level is at 47cm. I still want to add more light though lol

