It doesn't look serious, but geez that is a tall plant, lol.
You've got a lot of worm castings which can hold a lot of water. This may explain the clawing. Maybe next time think about using less. What happened to the other 10%?
I'm also not familiar with those nutrients, but many times the bloom formulas will contain practically no N at all. It's plausible that the high P and K ratios are doing a number on your plant. The leaves are yellowing slightly i.e. not as green as the others but they are also turning brown. I don't think you have anything to worry about. Your plant has plenty of leaves on it, so don't worry about the ones at the bottom. A lot of times lower leaves will die out on their own as the plant ages. Overall your plant looks just fine, so don't do anything drastic, OK?