What is the best technique to induce flowering under CFL

I am using CFL exclusively and would like to induce flowering next week. Now i have read that people go with 24-48 hours darkness to start. some go 18-6 for a week then 12-12 etc....... Any suggestions for a no fail technique?

12/12..... never fails. change your cfls to 2700k soft white if you havent already