Recently changed from T5 HO to the IT2040 (similar LED's to the d120, I think?) and really like it, but it took awhile to get used to the blue factor
Did quite a bit of reading and it seems that most run a fairly high percentage of blue to white, but for me, I'm happier with a max of 65% white to 50% or less blue (slowly ramp up and down from this). Time will tell if the tank agrees
Tamara