The V shape leaf & the banding (stripes) looks like Mg deficiency...I had that with 1 of mine..I put 1/2 teaspoon of epsom salts ($7.00 drugstore) in a gallon of water..give 1 shot and see if better.... mine came around in 1 watering...luck.
*Good chart Go to FAQ...to plant prob...to nute/ph prob....to chart by Nietzsche...good pics.. *