I think you threw off the PH with your ferts you gave it, you appear to have several nute defs the wild leaf twisting also makes me think its Ph
complete a soil runoff PH test.......
with PH corrected water (6.5-6.8PH ) pour enough water in the pots so the water runs out the bottom of the pot ...collect & test the PH of this runoff water....

If the PH reading is out of optimum range 6.5-6.8 PH, you need to flush your plant.
Flush with PH corrected water, till in optimum PH range, 3 times the volume of the pots is the rule of thumb but may require much more flushing if the rootball is thick & sour
EG: 1 gal pot = 3 gal. flush

add 1/2 strength FLOWERING nutes to the last gallon of the flush.
Ganja Guerrilla Reviewed by Ganja Guerrilla on . Whaaa...? Day 59 of flower. Starting approx. 4-5 days ago, a couple of fan leaves (1/2 way up the plant) started to go a bit yellow with a bit of purplish/brown in the center of the leaves. It happened so quick I didn't notice whether or not it (the yellow) went from tips of leaves-back or backs-to-tips. Being a bit lazy, I just assumed it was a nitrogen def. since it has been in flowering with nearly no N for a couple of weeks now. (I just checked my soil pH too, right at 6.5-6.6) I think it was 3 Rating: 5