I'm using 8 lights on my baby in my ava. a 2x 2700 lummy 2x 1700 lummy Both 6500k's and My Huge 5500k spectrum 7000 Lummy and 2 LED 168 red and 168 blue. And she has 4 roots growing big branches in vegging for a month now maybe a month in a half but I just topped it and will be flowering it later this month or next depends.