Fem seeds our made a few ways. One being Colloidal Silver.
Example: If you have a female(XX) Cck plant you can take a clone of it. You spray the clone with the CS as it starts to flower. This will cause pollen sacks to form on the female plant(XX pollen). A typical male would have pollen that was XY. You then take this hermie pollen(XX) and hit it against the original healthy Cck female(XX) plant. Or you could even cross to another female. Blamo! Fem seeds. The plant you spray is TRASH. DO NOT SMOKE IT! Throw it away after collecting the pollen. *This method is slightly different because it does not pass the hermie trait to the offspring as a plant does when it selfs. (I don't know how much truth there is to that.) A male plant has chromosomes XY. A female has XX. A female that has gone herm is still XX and so is her pollen. This will make seeds that all XX. I, myself am a seed junkie. I would cut the top and leave the lower to finish seed production. With the length of day you can even leave it outside to finish.