Your PH is too high,need's too be at 6.8.Your pot's look too small,so prolly root bound.look's like your over-watering.
Some yellowing is normal in flower (for some people) but most of the time I dont get the N def. If your PH and PPM are correct,your chances of N def. are far less.
At this point i would not transplant them.but flush them,then set the ph at 6.8,and feed them a proper mix of bloom fert's
Divestoned Reviewed by Divestoned on . Yellowing Fan Leaves Indoor Soil Medium: Farfards Professional Soil 70% soil, 30% perlite Water source: Tap Water Source water pH: Straight from the tap - 7.5 Age of plant: Week 4 of Flower Type of fertilizer: Technaflora Recipe for Success Rate of application: 1/2 strength every other feeding Lighting source and distance from plant: 306 actual watts CFL, < 3" Temps: 75-80 degrees, 60-65 degrees Rating: 5