on this plant i have a Viparspectra "300" and also a meizhi "300" watts.. stuck the 2 lights together with velcro and together they pull about 250-270 true watts
here is a picture of my lighting setup
https://i.imgur.com/NlIenmw.jpg
I agree with @@SeedLover it looks like nutrient burn or excess nutrients in the soil , also from the looks of your trichomes she's really close to harvest I'd say she has maybe 3 weeks or so left , so the leaves yellowing late in flower is totally normal , the plant think's it's fall so that's the reason sometimes for purple and yellow leaves.
Hi there, it does indeed look like nute burn but at this stage you can't do much about it, but it's not the end of the world. I don't know how long this baby takes till harvest but I think that you're probably flushing already. Lights too close should show on the top flowers too, but from what I see it's just leaves. Probably a deficiency in something caused by excess of something else, still too nub to tell you which right now lol. She's still doing well :) we all learn!