how long does it take to show sex?

got cfl lighting in a stealth grow box 3 by 3 by 3 ft long and it started 12/12 3 days ago. how long does it take to show sex also what nutes do i use. i used mirical grow for veg.

Dont use miracle grow. Your plants will show sex within the next few days or maybe it might take another week and a half. It depends on how mature your plants are and if they are flourishing or stressed. Use an organic water soluable nutrient to feed your plant.

I would recommend botanicare as a brand name to check out. Works amazing for me.

ight thnx 4 the help

If you veg for 35-40 days they should show sex immediately, if not sooner.

once the light turns off?? or at 3 days??

They should show sex within a week or two! I would use Fox Farm they are the best