Athosanswered grow question 6 years ago That's good, they have not stretched because they receive a good amount of light and so they don't need to grow more stem. Keep in mind that what's important is that they develop nodes, leaves, side shoots, not stem. A squat plant is much better than a stretchy one, it will be easier to have a flat canopy and you will have much less risk of running out of space; LED bulbs are great for that. I invite you to visit my diaries where I'm using LED bulbs exclusively, they will give you much better results than CFL at a 25% the power draw of CFL. PRO TIP: take the plastic dome off, it will give you quite a boost in their light output.