That's the only thing i can think of.. I wish i had a par meter so i could see what horsepower I'm working with. I think the lights are so bright. That when the temp dropped a bit back down to low 80s. It threw them back off, and they weren't able to metabolize the available nitrogen? I was thinking the low 80s would be fine coming from CMH in flower. But i think CMH just keeps the leaves much warmer like sunlight. So even if the ambient air is cooler, the plant stays trucking along. At least that's my theory. Along with not quite enough available N.
Is it detrimental giving too much N at this point? I'm around 45 days in