dopedeeii- My lights in the veg room are about 4" from the tops of my plants. I will probably be using 2700k cfls to flower because they keep heat and price down (my two biggest concerns). I will probably flower at 10" or 1', I'm not sure yet. And for topping, what does it do, and at what nodes should i top? Each plant has 5 nodes if you count the 1 fingered leaves from the seedling stage.