Do you know your pH? If those are the topmost leaves could definitely be burn from the light. LEDs are hard to gauge since they dont emit much heat. Top photo seems to have the nitrogen claw, and also the leaves are really dark. What nutes are you using?
Haven't started using nuts yet waiting for them to come in the mail and I have my 1000 watt like almost a foot and a half away from the plants got just that one plant I was using a mix between miracle grow and organic mix when I transplanted that one