Quote Originally Posted by psteve
A reflector will almost double your light output, and is ESSENTIAL when growing with CFL's
Right, but to maximize lower and mid growth, I think the longer bulbs placed vertically(bulb tips up) could depend on reflection from inner surface of box alone. Done right n tight leaves minimal lumens wasted.

Very true though, if you dont properly harness your cfl's they're about as usefull as another Bush in office!