I have five 3" pots under a 4-bulb T-5 light systems. I let the seeds soak in water over night and then placed in pots. Three have sprouted, however one got so long the stem couldn't support the top and the seedling fell over until it touched the side of the pot. The light system is 10 inches above the pots. I don't know why this happened. Did I not plant the seed deep enough in the soil??? Or not enough light and too far away??? Would appreciate any help. Thanks