Quote:
Originally Posted by Hotwired
With white paint, it's about diffusion. Diffusion is a good thing because it allows light to reach surfaces of the plant that normally wouldn't be lit as brightly. I use mirrors, because they are cheap, can be cleaned, and have the highest reflectivity of any material. Crumpled aluminum foil is a good solution as well. I have a friend who covers his multi-cell trays with aluminum foil, then punched a hole with a pencil to plant his seeds. To me that's a bit over the top, but once the seedlinge emerge I have to admit that it really helps to get light on the leaves. I'm not sure how much good it does to light the bottom of the leaves.
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You may confuse some insects with light on the underside of the leaf.
Jeff