OK here is my ghetto grow box. It is 2 tubs, the kind used for beer and soda at cookouts, stacked with weather stripping in between. They are lined inside with white duct tape and outside with black to help block light from getting in or out. (this takes forever I recommend mylar instead). The white U outlines a thick cloth napkin that hides a peep window so I can check out the windows without opening it up. There is a fan on top and the 2 inch pvc at the bottom is the intake. Inside I have a 90w UFO and 2, 26w daylight 6500k CFL's along with a small fan for circulation. I also have a thermometer/hydrometer on top with the sensor running inside to plant canopy. It stays around 78 with the lights on if the fan is set to high. On low it runs about 82. At night it drops to 57-62 degrees depending on the temp outside. I turned off the heat going to the room.
The pics of the large plant (shwag bag seed that turned out awesome) are from a grow I did 2 years ago using a similar setup, except the box was square and maybe 1/2 - 2/3 the size of this box. It had 6, 26w warm white CFL's and I got a harvest of 2-2.5 oz. The small girls are pics from today. They are 9-13 days old since sprouting out of the dirt. Can't remember the precise day for each of them. The genetics are as follows starting in top left and going clockwise: Big Bang (GHS), K.C. x Brazil (KC Brains), K.C. x Brazil, and The Church (GHS).Barely have gotten any vertical growth. The BB has a stem only about 1 inch tall. The KCxB just started growing up and have doubled in height in the past 2 or 3 days. Church has just over an inch tall stem.