Hey G/L ,
The 3 times I've grown it myself they ended up neon yellow for some reason ? The pic. I posted late in flower of The Church - the yellowing wasn't from N def. in late flower , they were like that 1 mo. before the light cycle change ? I don't think there was any lock outs - they finished just fine anyways . I might learn something from this thread , now that all 10 of mine are gone .

Mine didn't look like your leaf pics though when the yellowing took place . The whole leaf turned yellow , the veins / lines were not green like yours ?
Peace Bro.
Crispi :stoned: