Everything stated by the vets above is good info. I will also add a little basic info tho. Back in the days of HID lighting. Most would run Mh for it's high K light spectrum in veg. Switch to hPS for flower for the yellow harvest sun light.
The 3500 ish k lights tend to make the plants stretch and be floppy, you want to use 5500 ish color for veg if you don't have a full spectrum led