Possible P Deficiency?

soom looks like root related, other spots might be Caclim defiency. p-def will have a blueish hue on leaves. you do get dark spots - more copper/purple/black in color though. i don't see that here. same feedign is irrelevant. what you see is what matters. never let that thought impact diagnosis. "it's all the same" doesn't mean shit, fwiw, because clearly it is not handling it the same, even if it magically is exactly the same. i know the feeling too, so just ignore it. not enough info. soil is a wildcard. you'll have to try something, see if it works, and try to preemptively avoid it next time. if this sort of thing is common place, consider a different fertilizer brand. a ton of marijuana branded stuff is just some mopes in a garage with no experience making fertilizers compared to a real AG company with decades of expereience and relationships with real farmers etc etc. lots of esoteric mixes and concepts that may or may not worth with most plants... it worked with their small sample and limited genetics and they think it's perfect, type idea --- not talking specifically about what oyu use, as i have never used that stuff. but, be aware, constant problems when doing things right means your products are bad. only the future can tell. good products shouldn't need massive adjustments to what tehy instruct. if it does that's a bad sign (again, common sense applied, with soil you always start small and ramp up to 'full', that's different context) 1-1-2 ratio is a good ballpark to start, but with soil you have no idea what ratios are already in there. so it's trial and error. take notes. if you get same products next time, hopefully you can avoid it all by knowing when to add what... retroactively is the only way you learn it. trial and error with soil.