I'm using 4 flouros, 4 feet, two inches away...believe me I know and practice everything you said in your post.....I just thought that would be a good place for my little fan, which apparently it is not....I wanted to strengthen the bases by having some circulation blowing on them...obviously too much too soon for transplanted seedlings in pea gravel.......hell, I'll post a current pic.....2 of the 3 made it back, one I just topped it to see what happens....