hi rastagal
I have a wardrobe closet (4 x 5) that I grow in. I cover up 2 holes at the bottom with a piece of cardboard and then tape over that. Keeps it nice and dark for budding. I'd also up the wattage. You're not going to get much with 125 watts. In the day, I open up the closet and turn on the fan. It works for me! Good luck.
peace,
alaskagirl :rasta: