That's a lot of light for a seedling unless you dim it or raise it up high. A couple of CFLs @ 24/7 would be better. They don't need much light to sprout. Also, the FFOF can be hot for some seedlings. Consider using a proper seedling mix. Finally and perhaps most importantly, you must keep the soil damp for the first few days or the tap root dries and they die. A spray bottle is best for keeping the soil moist. I flush my pots before planting so that all the soil is thoroughly wet when they go in.