hey man, first thing, you need to post some pictures. They are really the only way to get some solid feedback. Also, give a little more info about your situation. You said your ventilation might be a problem? is it a closet grow? what's your temp? PH is a big deal with plants. you want to keep your water's ph around 6.3 to 6.7 (you can buy a little test kit at any hydro/garden store for like 5 bucks). Also, CFL's are kinda weak, you can definitely grow pot with them, but it helps having a lot of them. add a couple more to the mix. They should also be only a couple inches away from the plant. For the light times, I prefer having my plants on a 20/4 or even a 20/6 light schedule. Plants need a break from the light too. What kind of dirt do you use? Any nutes? i'll be on again later if you have any questions. Trust me, once you begin to read about how to improve your plants, it's a down hill cycle of upgrades.
happy meditating