If there are droplets of water on the leaves, or they remain wet while the light is on, the droplets act like a magnifying glass, and burn holes (sometimes very large) through your leaves. I don't think that it explains everything up the pics, but I ran into a similar problem, and tried everything, pesticides, sprays, nutes, and it all ended up that I was spraying them with the light on. I stopped that, and my holes stopped.