Flower deficiencies/ph lock out

I agree with Ninjabuds in that if it's in soil, it's gotten too acidic. I have run into that a few times myself using liquid nutes. My nutes were more designed for hydro than soil, so over time it would drop the soil too low. Ive since swithced to a more soil based nute, however I found... Running higher ph water through will help flush some out, however I've also found just sprinkling 1.5 tablespoons of domolite lime that is ph buffered to 6.5 on top and spreading around works best for me. I got mine on Amazon called Down to Earth and it works really well for me. It helps regulate the ph of the soil to 6.5 while adding some magnesium and calcium. My girls greened back up after. This is just my thoughts. I'm no expert. Best of luck! Happy Growing!

She is green and a plant. With a bit yellow.

What type of soil are you useing? Have you checked the ph of your run off water. ( water that comes out the bottom the pot) I have a good feeling your useing soil that is really acidic. Most likely you can just run a few gallons of tap water un adjusted leave the ph at 9 or whatever you tap is and run like 4 to 5 gallons thru the soil if the soil ph is to acidic. Good