Only because it's been reused it wasn't a fresh batch my local store was in back order so I reused the soil from before
How old is the ph meter? when was it last calibrated?
Reused soil will have residual nutrients. Not necessarily the issue here but pertinent information still.
Recommendation is to cut your feed strength by 1/2 for a few cycles. Watch the the
new growth to make new adjustments if needed .
The old growth will not improve/heal however should not get worse than it is.
Be sure your PH meter calibration is correct.
Correct any PH imbalance BEFORE watering the plants. Mix ferts, check PH, adjust as needed BEFORE watering the plants.
Over all the pics do not look terrible. They can still produce a bountiful harvest depending on your course of action and
the amount of time you plan to veg.