Is she Starving?

Nirvana - Northern lights femanized
FFOF , ewc , perlite
400 hps
blah
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Day temps high 79-82
night temps 64 - 70 (slightly purpling)
Ewc / budswell / molasses feedings

This is 4th gen of the plant and seems to degrade more ever time , from seed it was the first plant I've had that stayed green u ntill the last weeks.

Also all showed signs of N tox when transition to flowering.
Should I flush , feed , or leave be ?
Thanks

Big key factor to 6 weeks into 12/12!

Humidity issue. They look dehydrated

Could be , my RH lights on are around 40 percent and lights off is around 60^ percent.

continues to show N tox. flush.