Purple lemonade

Got a little light burn on all 3, 1 is worse than the other two, light is 13 inch away around 30% power 320 ppfd, i think the burn has stopped. into pre flower now, i am amazed how quickly these are growing under the new light, still having some light burn issues, ppfd is now 400, with ppm 500. I am loving how they are growing under the migro array, they more tall and less bushy, than when i used blurples.