Definately run the fan as much as you want. Just be careful when they're real young, maybe tie them to a post. The fan will only make their stems stronger and also simulates wind in nature.
i keep my fans running 24/7 on my babies even in the dark period. they all have very strong stalks on them.
i just started with a fan a few days ago but i feel that it takes me temp way down too low when my lights go off. im on an 18/6 light .but it sure as hell helped my plants become stronger. a lot depends on where ur growing, my buddys oscillating fan burned out and all he was using was a 6" clip on fan. it didnt move the air enuff in his grow tent and he blames this for leaf mould.
i would leave them on all day n night for max stem hardiness. IMOI only have one 6inch fan on 18/6
i would leave them on all day n night for max stem hardiness. IMO
90-94 degrees seems pretty hot. Can you vent heat out of the room and bring fresh air in from a cooler room in?