Too much light or other deficiency

the non-yellow coloration is either senescence or temperatures dropping slightly too low at night, or a combination of the two. Can't do anything about a plant slowly dying (senescence). excess light would stunt the plants too, fwiw. interveinal chlorosis with spots... i'd wager it's magnesium related... you don't see the symptoms of magnesium problems for 4-6 weeks AFTER the problem has begun. The nasty and large necrotic spots might be related to root zone... knowing how it progressed would help a bit. If it progressed slowly from the chlorosis and dead spots, then still related to Mg, probably... if it was it's own thing and started that way, i'd consider root zone issues... how are your watering habits? you are in soil, so you should ensure entire pot gets wet with minimal runoff to reduce leeching and only irrigate after top 1" is dry -- feel weight at that point and use that as your trigger. If you water at same low-weight point, it'll require roughyl same volume of water each time and you can reduce waste in hindsight after learning that volume needed. if you weren't doing that and the roots are constantly wet, you risk all sorts of microbial issues or roots rotting etc. Fox farm trio is far from a complete feed.. it's probably missing somethign you need.. i'd consider buying some cheap foodgrade epsom salt (magnesium sulfate). you may need this to supplement the FF trio... consider what the trio adds and make a common sense guess... i am soilles and provide 100% of the need throgh fertilizer.. Mg should be 80+ ppm to avoid problems. pH will have a say in how much you need to add as will your water, soil, and other fertilizers used. I rarely see a ff trio grow healthy deep into bloom phase, just my 2 cents... need supplementation and lots of trial/error to get there.