
MJ- sorry about the road bumps on this grow! If you like, fill out the info form anyway, and maybe we can pinpoint the underlying source of the problem,.. From what i can tell and what you said about progression speed, I'm pretty sure the soil pH went South!

... also, in the future, please take pics in normal lighting; color rending is lousy with LED/HID lights, and reading the colors and details of symptoms is key to diagnosis sometimes!
... what's your soil and amendments?
...do you pH adjust water and nutes?
...water source,... it's pH and TDS or EC reading if possible?
A very fine tool to have is the Accurate 8 soil pH probe-->

hsoil: the long probe is the A8 model,... unlike the loust skinny probe types seen all over at garden centers etc., the A8 is far more robustly built and better tuned, +/-0.2 pH resolution,... used right, it'll give good readings of actual in-pot pH at that depth-

nothing beats direct measurement! The run-off method is so full of inherent measurement errors, it's nearly useless,.. even the modified protocol method and calculation here in the Infirmary (so called "sticky" section, above this one) is just a crude estimate.... I use this tool all the time, and it's worth it's weight in gold! Between this, and always pH adjusting your feeds and water if needed, will go a long way to preventing pH swings that cause nutrient issues!