i dont know much about growing but it doesnt make sense that a window sill can get 12 hours of sunlight... speaking theoretically the sun will be half of the time on 1 side of the earth and the other half (of 24 hours) on the other side of the earth so... im just going out on a limb here and assume the roof of your house would end up blocking half the the 12 hours that the sun is actually on our side of the earth... so at max 6 hours of sunlight? and part of which is indirect sunlight that keeko said was useless. ionno im kinda drunk soooo it made sense to me :wtf:

edit: i had no idea i wrote that much... sorry if its useless