Still think is nitrogen deficiency, since this ear...

it does look like nitrogen a bit, but it's not progressing properly, bottom to top, for a mobile nutrient. K-tox can cause yellow leaves near top and yellow/spotted leaves at bottom. K-tox will also lockout Mg, Ca, Fe, and Zn... the last two would have that interveinal chlorosis you see in leaves. I still this this is more about overfed than a deficiency anywhere. Looking at your feed in diary, you clearly are giving it plenty. Raising pH to 6.5 would improve availability of Nitrogen, but i think this is lockout. i'd link you my spreadsheet for nutes, but i bet there is a better one through google that can potentiall handle specific gravity -- needed for some liquid nutes and how they label their products. w/v or w/w? brain not functioning at moment. https://manicbotanix.com/calculators/ppm-in-solution-calc.php Looks like a good one. Try that one... All the info will be on your guaranteed analysis labels - compare results to: PPM / Element 120 - N 50 - P 200 - K 100 - Ca 80 - Mg 110 - S Anywhere near is "fine" ... but if way over, i'd reduce to roughly these levels. You are mostly soilless, so i'd treat it as such at this point in grow. The soil is probably tapped or leveled out with coco and previous fertilization irrigate with ~650-750ppm feed. get 10-15% runoff, and it should right the ship within a week or two.