@Chewbacca based on the leaf tips, your light is too close. Also, based on looking at the top of your soil (and reported numbers), you are overwatering. Your light if 600w led should be like 18-24 inches from the top if not more. I'm guessing that you don't have that light so close (4 inches), but whatever light you are using, I would raise it a bit. Make sure you get a fan in there blowing over the tops (gently so as not to cause wind burn), and dial back the watering, both the amount and frequency. Last but not least, try to get your water ph to 6.5 (recommended for soil grows). Good luck on your grow!
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