I have tried to convince my mother that a light setup over the top of the seedlings would help them grow bushier with thicker stalks. How close should my lights be to the seedlings as they break ground? we have had a problem with seedlings getting leggy and toppling over after a few weeks. i have seen commercial seedlings that are thick and lush with short thick stalks and i want to recreate that. can anyone give helpful advice on this? thanks!!