oh and also incase you are really trying to grow pot and really just have no idea what your doing..that will not grow a thing man you need that light to be about 2 inches off the top of that cup and u will need to move it up every little while..also the cfl you need must say daylight on the package..the tin foil is dumb go drop 30 bucks for a roll of mylar..get yourself a rack of a sort in there so you can move up the lights when it gets big (the plant) i would say use 2 100 watt daylight cfls....and go do some research...i find it funny that you have posted answers to people harvest time questions when your trying to start a grow room with breathe right and tinfoil lmao