Sorry fat fingers hit the post button before I was done. I have a mixed reef with some sps. The tank seems bright then ever now. Not sure I need the t5’s anymore. Has any left the t5’s behind with the gen 4 pros.
Definitely not needed with the g4 pros, but corals would also love the supplemental light from t5's and they will also help fill in some shaded areas. So really a personal preference at this point i think.