You've the xs 1000. That must be only at 40% if that's your DLI mate.
Higher your light. Xs100 is more than enough to give them 4 plants.
I've the p1000 and max they hit it 900ppfd in the middle. And? I got good grows..
Because LED's have a hot spot where the light concentrates the most. Typically in the center of the foot print of light. Or the plant is just a little bit closer to the light than the other resulting in different light intensity. Seems obvious. Am i missing something?
not much you can do about that i think buddy whats the problem your wondering why one plant is getting more light than the rest ? I have no clue I dont know what system you are using here but way too comlicated to me lol best of luck maybe someone else can understand the question better lol