Desperately seeking help!

I'm having a terrible time understanding what is going on white plants this is an outdoor grow in pots. I'm very confused on what is going on with these plants I give a floor nor of Nova Bloom which is a which is 4 8 7. Is it a deficiency or root bound. My ph is about 6. Any help would be great.

Nitrogen deficiency is my guess ...... seeing the darker veins and the yellowing

Not much you can do this late
Clip em off if it is for stealth , otherwise they will still finish

Ok. Thanks. Should I just continue feeding as normal or just give them some proper ph water. Yes of all times for this 2 happen. 12 hrs of light starting tomorrow.

No stealth needed, legal here in Canada. Thanks for the quick replies