yah if you're growing just lowryder, it'll bloom on its own, without a designated dark period, so light leaks aren't an issue unless you're worried about secrecy.

it's fine if you leave the door open to vent air in, but turtle's right-two cfl's are going to be worthless. either add several more bulbs and keep them as close to the foliage as possible or invest in an hps lamp; very worth it