Question: When using colloidal silver, after male charac shows, do you change lights to 16/8 or leave at 12/12? Thank you.
Answer: If growing indoors, you start misting the cannabis with colloidal silver when you first change the lights to 12/12, and keep misting her daily until the treated parts start showing male pollen sacs. You should continue to keep the lights at 12/12 until you harvest the pollen. Once the sacs have grown, you can harvest them and trash the (outwardly) male plants. Congratulations, you have all-female pollen, and can use it to pollinate your female plant for all-female (feminized) seeds!