First Grow - ILGM Auto GDP

You most likely have a salt build up in your soil from over feeding. Hypochlorous acid or Athena cleanse will help break it down. Lactic acid bacteria helps with organics. Other than that, drop the feed, give her some water soluble calcium and Epsom salt with her watering and drop the nutrients a bit.

Thats overfeeding, heavy, plus definitely ph swing and maybe even lockout. I see N toxicity, P necrosis. If plants still drink, then no lockout, just ph and overfeeding, if stopped drinking, soon heavy paling will start. If coco - flush, load WAY less in. If soil, no feeding for 2-3 weeks, only right ph and good watering regime, aka wet/dry cycle for roots to get oxygen

do you have guaranteed analysis labels? then, you have the ability to know what you feed per nutrient. there are online ppm calculators there's an app i've seen that can help, too. Symtoms overlap. Diagnosis based on what you see is only a "sure thing" when you also have familiarity with the products and some focused expereince in general with playing around with fertilization levels. hydro/soilles nutes -- 1-1-2 ratio fo rnpk and 4-2-1 K-Ca-Mg are good starting points. You still need some trial and error to fine tune it, but it'll get you there faster if you start here. 'soil' nutes that rely on microbes to get N plant-available you shoudl go with 2-1-2 for npk - basically it builds up a non-plant ready level of N in substrate for the microbes to work on and provide enough to plant per day... per week whatever.. over time. Things to consider -- light burn if only at tope (the interveinal damage) .. if not light burn, looks like a boron deficiency which would be very unlikely, so ph or nute lockout becomes a possbility. if you have switched to a "bloom' formula, i'd wager it's too high K or P, because the plant uses roughyl as much of both of those in vege as it does in flower, despite common belief among the peanut gallery.