Look, there are different ways to grow. I have seen plants go completely yellow, red, purple, even black at the end of their life cycle and put out amazing buds. I have also seen, mostly in hydro/soiless, plants stay vibrant green until the last day of life and produce great buds. I prefer the taste of a plant that has yellowed out toward the end of it's life but that's up to the individual in my opinion. Neither way is right or wrong.
That said, your plants look like they have run into the end of the pots they are in. They are probably somewhat rootbound but more importantly, they have used up something in the soil they need and aren't getting it from your ferts. I don't think that you have over fert at all. I would say to hit them with a good shot of micro nutrients and some cal mag at full strength and meta K with next watering. Also, I would foliar feed a mixture of kelp and some big bloom the next couple dark periods. That's just me, your mileage may vary.
I would caution against doing too much to them. They are really not that bad and it would suck to mess them up worse when they are right on track to make it, even if just barely. Good luck. Even if they don't improve you will still be harvesting some nice nugs.
That said, your plants look like they have run into the end of the pots they are in. They are probably somewhat rootbound but more importantly, they have used up something in the soil they need and aren't getting it from your ferts. I don't think that you have over fert at all. I would say to hit them with a good shot of micro nutrients and some cal mag at full strength and meta K with next watering. Also, I would foliar feed a mixture of kelp and some big bloom the next couple dark periods. That's just me, your mileage may vary.
I would caution against doing too much to them. They are really not that bad and it would suck to mess them up worse when they are right on track to make it, even if just barely. Good luck. Even if they don't improve you will still be harvesting some nice nugs.
