i have a box in my closet that im growing three plants. I germinated the seeds before planting and im using a prefertilized soil. The light right now is a 12" flourescent tube. I planted the seed yesterday and one of my plants grew just a little. do i nedd alot more light and what kind? is miracle grow 15 30 15 a good idea to use as fertilizer? The temp in the box isnt warm at all the temp where i live is about 50-60 what can i use to keep them warm but not start a fire.