That's causing the plant to Stress Hermie which is not the kind of fem seeds you want. As those seeds will have a higher tendency to herm as well when they are grown under normal growing conditions.To get feminized seeds you can manipulate the lights (light poison) during flowering to force a female to pollinate its self and produce feminized seeds. Am I right? 5.5 hours off 1 hour on 5.5 hours off 12 hours on, then start over.