If things are turning white that would seem like light bleaching to me. Usually, if it is from nutes the burning starts at the tips and works its way in but stays brown for the most part. Are the affected leaves at the bottom or top or all over the plants? I see 1 pic where there is a bud that has leaves with burnt tips and chlorosis of the leaf material between the veins. The burnt tips are likely from the prior overfeeding. Chlorosis can happen from lights being too close or a nutrient deficiency/excess. I would start by watering until you get runoff next time you have to water. Check the ph of your runoff and make sure it is still within the normal range. If it isn't then I would do a heavy flush of the medium to reset the ph levels and clean out any built-up salts. Also, having read your last weeks entry, I would skip the end of grow flush that a lot of growers like to do. It is a pure BS bro-science that doesn't actually do anything. My bud and I did grows at the same time and he flushed while I didn't. The end products wound up tasting and smoking exactly the same. I yielded a bit more, but that was likely because I used a better light. Think about what flushing does. It makes the plant use the nutes in its leaves to grow the buds. So the nutes are moving from the leaves to the buds. That means you aren't actually lowering the nute content of the buds by much if anything. Also, consider that there are some nutes that cannot be moved from the leaves. That means the buds aren't getting everything they need to develop properly and is likely hurting your yields by a small amount. There was even a study done last year that tested flushed vs unflushed buds and found a 5% or less difference in nute content between the 2 groups. So in the end, if you want a good smoke, make sure you are slowly dring your buds and jarring them up before they get too dry so they can cure. The dry and cure is the most important part of the process for breaking down the chlorophyll in the buds and creating a smooth smoke.
+1 strain
