whats wrong leafs yellowing

some one diagnose please

what kinda soil? what kinda nutes? what kinda lights? gonna neeed some more info to help u out. but from a glance id say probably a def. of some kind

the tops are healthy though

okay i have been using bone and blood meal, and tomato ferts (just a bit for potassium, its plain black soil, and i just started using ionic bloom

i give it blood and bone meal, disolved in water every week, and gave it ionic bloom twice, it is growing fast. do u really think it is def, my guess would be burn becouse the yellow leafs become crisp take onther look and tell me

on second thought, maybe potassium def, they are getting lots of every thing exept potassium, can any one tell by the pic

it could be alot of things. but yeah with a def. the leaves will start yellowing from the bottom up. t could just be a lack of light gettin to the lower leafs. i know my plant started droppin the older fan leafs as it grew. i dont know much about the bone and blood meal so i dunno. but overall looks good. i would just keep an eye on it.

I would try to give it a good shot of Epsom Salt and foliar feed them with a food that is high in Nitrogen, make sure to get them dried up and spray them well the next day with pure water. During flowering yellowing is expected.