Ema26answered grow question 6y ago Yo whatās up! I wouldnāt be worried about the casing getting stuck Iāve had multiple where Iāve had to remove the shell myself. As for the light I see youāre using a 125w cfl and i would personally get it as close as 10cm. I just got through a seedling with 250w cfl being 10cm away. Any further and theyāll be stretching for the light. Hope this helps, good luck!š±