ahhhh sick plants!!!!!

my plants had been looking great up until week 4 when i noticed some yellowing of the leaves, heres some pics to show what i mean.




if anyone can help me identify whats wrong with my plants i would really appreciate it

looks like a nitrogen deficiency, have you given any nutes yet?

i started feeding them both a 1/4 strength veg solution at the beginning of week 3, but the soil i bought was very cheap so i feel like there weren't much nutrients in the soil either. Its week 4 now though so I just upped the nutrients to 1/2 strength solution today so hopefully that should take care of the problem

this looks like overfertalizing. the bottom leaves look a bit burnt, not much, but you can tell its not a deficiency cause you leaves are way to green, which most likely means too much nitrogen. Looks good overall though!

would u recommend i do a soil flush or feed it less nutrients, or no nutrients?