Please take a look at it

ppm run 850
ph stay at 5.6 to 6.2
In hydro flood table 4x4
Using all advanced lines with part 2
any idea why it doing this View attachment 1806958View attachment 1806959View attachment 1806960

Your answer should be HERE: https://www.rollitup.org/marijuana-plant-problems/38772-guide-diagnosing-plant-problems.html

your nutes are messed up somewhere and you burned your plants.