Yellow leaves

I would go with amix... its hard to tell if i only see one week... but the bottom leaves are from transition to flower// stretch... she just cannibalised herself........ But the leaves at the top look like bleached....// burned I think your High quality Quamtum board light is to close to them------ Because the Leaves in the middle ( under some leaves look good0? dont They........? Remedies...... Give your Girls some calmag with Nitrogen /( a little more), tuck away the yello ones... reduce the light// give more distance to the light greetings P.s,,,, the burns// bleached Leaves will remain... but the new growth should grow normal