If that's tin foil get rid of it. Tin foil has about 55% light reflection while most white surfaces have about 75%. Tin foil also creates hot spots.
I've read the sticky, I know all about tin-foil. As you can see, the tinfoil is about 8 inches away from any of the CFL's on my girl, thus resulting in little to no heat transfer. 55% light reflection is better than the 0-??% that soil has....if you look closely, my plant is surrounded by white Styrofoam. The tinfoil is not hot-to-the-touch... yet any of the light it reflects to the bottom leaves is helpful....I need advice on the bushiness of my baby....
Well, excuse me for trying to help. I'm just trying to inform you that a piece of white paper would be more effective and not cause problems at all. Bushiness is good and your nodes look quite tight. Your humidity might be a bit low, though, and that's probably why your leaves are a bit curled.