kool setup I had the same thing going. Couple things you can use a mylar blanket that you buy in the camping section of walmart. Mylar you can buy at any hydro shop. I had my cfl's on for 24/7 but, got better results from 18/6. now that box is tiny it won't be good for gowing full plants unless you decide to go 12/12 from start. my plant grew from 6"s at 30 days to 30"s at 60 days went to 12/12 on the 30th day of 18/6. She is fucking huge. I also ask you about what your gonna do about heat the box is gonna get real hot bro. check out my link. I am also doing dwc. As I got more into this i bought a tent and a 400watt MH and HPS. I recomend 12/12 from start if you plan on doing your whole grow in the box.