I have 4 fem seedlings almost 2 weeks old. Im going to move them to their forever home in a few days, I have some nice root systems going and don't want to damage the growth if it gets to long. Anyway they are under CFLs now and will go to 400w HPS, I was never good at this part. When do I make the switch, how do I transition them, ie;how far from the seedlings do I hang the light when do u lower it more etc. Like I said Ive grown b4 but this was always the hardest part for me to figure out. Help appreciated