natural light

I take my strongest girls out in the evening for natural light from the west window. I have a good light setup but i believe that even a little strong sun benefits the plants by giving light to sides and bottom. Anyone else do this. If anyone responds, ill post some pics of the buds in the...

I want to start a new grow using window light, anybody have any tools to help me out with this? I am located in northeastern part of the U.S. My apartment gets great lighting, but I am worried about not enough light at night. Can I mix less with the natural light throughout the day?