Safe female seeds are one of those things you probably won't be able to make by yourself. The companies that sell fem seeds have been breeding that plant to be a female for years. You're better off just using a mother and taking clones. There are some chemicals people say you can use to guarantee sex but I don't have a need for fem seeds bad enough to try the products out.
Colloidal silver and random lighting schedules. Yo can make colloidal silver in ghetto way by getting a 5 gal bucket, some jewler silver thread and jumper cables attached to a running engine attahced to the silver wire