If you are going to foil spray I suggest that you use a wetting agent. Like Dutch Master penetrator or Wet Betty from Advanced.

The reason you do is because the water droplets are to large and yes they can cause reflection in the leaf surface. Act like a magnifying glass so to speak. Wetting agents change the make up of the water and allow it to cover the leaf better and not to blotch or spot on the leaf.


If you don't use a wetting agent then I would suggest that you DO NOT foil feed. Why take the chance with your plants?