Whats happening?

[Custom99]

I have no idea what is happening with my plants. Been growing since last october. First plants are harvested. These next couple have all started to look like this. Conditions, watering and nutes have not changed since day one. Please advise.

 

[NairnM16]

Looks like a ph lock out or something
The plants going to its leaves for Nutes

Or it’s insufficient Nutes
What’s your
Ppm
Ph of water/ soil
Soil or coco
Nutes?

 

[GNick55]

how many weeks flowering?
the plant is taking nutrients from the fan leaves to feed it where it needs it. if your almost done than don’t worry about it, if you still have a couple weeks, just feed it a couple millilitres more of each nutrient.