alright, so these plants are about 2 months old, if you really have space probs i recommend flowering soon, i had a slightly larger area to grow in but i figured out how to stunt growth and make my own lowriders...lol(probably not a great idea...but it works)my baby is about a foot and a half tall, in week 4ish of flower....the plant is really about 4 or 5 months old, but as you can probably tell i dont really keep track. yours look overwatered, or over nuted, i only water 1 or 2 times a week, i dont use any fancy gadgets to tell me when to do it. i don't use nutes either, i had been using fish emulsion on my other plants (R.I.P.) and they looked nice but it smells terrible, and i got sick of feeling sick everytime i mixed it up. as for the sexing issue you wont see sex until it gets into flowering, like week 2 or so unless you're plants are really big, then it might happen in veg, but yours wont be so start flowering. oh and for the sake of your plants....please get some more cfl's in there, that fluro tube in back isn't doing shit, and the lights and how you have them arranged is atrocious get them all down on the top(and on the sides if possible)
good luck with it, and try not to get caught....also try and plan where to throw that shit if your house gets hit, i had all my escape routes planned along with destroying areas when i grew at home, my parents knew, but i wasn't about to let them catch the heat over me, be responsible.