I had my seedlings under a T-5 lamp about 2 " from the tops of the plant. I am now switching over to 125W cfl, 6400K, full daylight spectrum lamp. The manufacture says " keep the light approximately 6 to 12 inches of the top of the vegetation. The closer the light source is to the garden the higher the intensity, but narrower the coverage". If I put the lamp lower will it burn the tops? I'm concerned that with the lamp being 6 - 12 inches from the plant tops may cause too much stretch. Suggestons?