Uh oh bahbs! I'd start a "Plant Problems" thread, unless you feel you've got that yellowing pinned down. Tis very blotchy, with some leaves twisting contorting < almost always a sign of something definitely off besides the yellowing. And some upcurling and down clawing. Be sure to include grow medium, lights, ppfd, nutes, watering schedule, and pH values and how you're getting them. My gut says either pH issues, or nitrogen deficiency.