Thanks to all of you who responded to my last post (Seedlings and light). I have resolved that problem with your help. I now have another question. My pepper seedlings are now 3 weeks old. The foliage is starting to turn from a nice green to a light green, almost a yellow. What is up? They seem to be growing well and I have been very diligent about the watering, avoiding overwatering. Is a lighter colored foliage normal? Thanks in advance, Doug