I haven’t used an hps
hps has a narrow light spectrum from what I’ve seen. Mainly green and yellow. I know blue and red very important to the plants. I’ll start doing some studying on hps. But aren’t led with better spectrums better?
I thought what you did before. I ran cobs on a few grows, still have them, ok for veg. With this larger tent Im trying 1000w HPS and, its blowing everything I ever did out of the water. Just my experience of course.
Truth be told, you really only need HPS for 3-5 weeks in the middle of flower(when peak flower formation is happening), starting and ending with MH. MH increases resin production. Add some UVB the last 2 weeks to add a couple % to your THC, done.
In any case, do what works for you. You'll figure it out. Have fun!