no its lined with foil i cant see to find n e mylar in the area. As for the lights im useing 400w hps. Im not really sure what the strain is so i dont really know what the flowinhg schedule is but the is day 7 i hope to see some significant changes soon. Only bad thing about the budget box is that although the temp stays around 75 the duct tape holding the box together gets to hot and starts coming loose about every other day or so. other than that im thrilled thats shes doing so well.... i will post more update as progess comes along. thanks