Beginner Gardening: Pepper Seedlings are turning yellow!, 1 by WonderWeasel

WonderWeasel wrote:
Hello--

I am a pretty novice gardener (brand new to peppers), and decided to start some Caribbean Red, Datil, Takanotsume, and Fatalii peppers from seed. They are about 3 weeks old, and although most of them look healthy, there are a few that have begun to turn yellow after their first true leaves appeared. They are in peat pellets and were initially under a 125 watt incandescent agro-lite for the first week after planting (for heat), but I have since changed over to two 26 watt daylight (6500k color temp) CFLs, suspended about 2 inches above the plant foliage. I read that this problem generally has to do with watering (over-watering, chlorine, poor drainage, etc.), so I began letting the peat dry out pretty much completely between waterings, and also using a distilled water solution (1 tablespoon hydrogen peroxide/1 quart distilled water). Hopefully, this will correct the problem, but I just wanted the opinion of a more experienced gardener. I have also included a picture of the affected seedlings. Thanks for any and all help/suggestions!!!

--Jordan