I built a grow box that is 4ft tall, 2ft wide,and 1.5ft deep out of MDF board. I plan on sealing the box completely so thatit is air tight. Either Mylar or White Poster Board is my plan for thereflective material on all the walls of the box (the poster board is in questionbecause I am worried about heat spots). I would like to use LED lights so that Idon"t have to worry about heating problems, but was wondering if I could getone at like Lowes or Home Depot that would work okay? And what wattage and sizeI would need. Also worried about air flow. I don"t know anything about CFM andhow to calculate it to keep it smell proof and cool enough to grow efficientlyin. I plan to use fans and carbon filters to move air, and was going to do justa passive intake. The same size holes as the exhaust, is that the correct wayto do it? Any help would be greatly appreciated