Don't over analyze, it drives people nuts. Watch your plants and they will react to the light, if they show stress raise it or dim it. Lights get turned up as they get further into flower. Learn to read your plants, there is plenty of info out there with pics to show you what healthy looks like.I
I saw online somebody said 24" away at 150w for veg and 18" away for 300w. Now I have to adjust my light not to shock them as well. Im guessing the 15" away from light is now at 29,000 lumens (have to figure that out in lux) is to close, especially if im going to crank it up after a bit. Am I on the write path here?