Hi
@Michka! Colloidal Silver won't reverse a male to female, its purpose is only to block the female's hormones, forcing females to grow as reversed males. You should spray a female plant, or parts of this female plant, to develop pollen sacs and get a self-pollinated plant that will give you feminized seeds. Hope this helps, I'll be around, keep us up-to-date and good luck with your experiments!