In my opinion your plants are severely nute burned. The dark green leather looking leaves and burnt tips. It shows your ppm is 2750? That is almost triple what it should be at a max.
@bigmac1018, yes but that's at 1 gal..and then I use that and split it to make 3 gal. I dont have a tds gauge waiting for a one but going off of fox farms Food chart and add EST ppms for a few nutes not on chart.. my ph gauge had also broke right at flowering so I had to guess how many drops I needed to cond.