I'm assuming that your're growing from seed and flowering with CFL's?? if the answer is yes to both of those questions, u should/could flower in about 10-14 days with the amount of lighting u have.. you'll wanna top/FIM those plants too as CFL's have poor light penetration... that way u have several smaller colas and not just one big cola with a few popcorn buds..
if they are
clones and you're
flowering with CFL's, throw em into 12/12
now, before they get too tall
if they are
clones or seedlings, u can wait a little
longer till 12/12 if you are using an
HPS for flower
pics are always welcome too
keep us updated and good luck