I would like to start out by thanking everyone who has shared their knowledge on this site. You have helped me tremendously. So I am growing 3 plants under 2 4' t5's at the moment. I am hoping to soon add 1 or 2 more 4' t5's. I would like to top my babies to get several colas. However I hav heard that topping them may be risky because the flourescents do not give off intense enough light for the plants to recover. Any thoughts on this? Also if anybody could post a link to a video describing topping that would be greatly appreciated.