BioBudsanswered grow question 4 years ago Most definately lightburn but aso your fan is real strong. Consider aiming not directly at plants but also indirectly. If your LED has a dimmer, what is your current percentage of power (25/30% maybe 50% max but only at distance of 50 to 60 cm at least.
Only go gradually to full power and max 45 to 50 cm distance when flowering has started.
First you will see massive growth when you put the lights higher, fan indirect and new green leaves. When stable flip them to 12/12.