All but 2 plants Hermied

Hey everyone. So I’m growing some ripperseeds and some Nukeheads seeds. I upgraded to a new tent 1st week of flower and a new led light 3rd week of flower. Temps stay around 79 lights on 64 lights off. All but 2 of my plants hermied. All feminized seeds all different strains. My question is was is the light switch of was it the temperatures. Thanks In advance.

Genetics I'd say

Or aliens