I won’t be able to give you values like PAR, PFD, PPFD and all this kind of bs…
This is not the way I grow, I don’t read lines on paper.
I read in my plants. Your plants will always show if something is going wrong. You must read the leaves, the petioles, the stems and the tips.
Mars Hydro LED’s are extremely powerful, and built for all types of grow rooms with different levels of ceilings. In a grow box you’re limited by the space between the ceiling, the light and the tops of plants.
I use 6 x FC 6500. As I’m limited by the ceiling of the room, they never reach 100% full power.
In Veg the dimmer is set on 25% at 100cm from tops of plants, it sounds poor but the growth is already impressive on those settings.
I set the dimmer at 50% only when I switch to 12/12 cycle.
Only in by the end of flowering I give them just a bit more light at 70%
Too much intense light will trigger photoinhibition and will kill all the terpenes.